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meta- 或 met-
pref.（前缀）
    1. Later in time:
      时间上较后的：
      metestrus.
      动情后期
    2. At a later stage of development:
      处于发展的后期阶段的：
      metanephros.
      后肾
  2. Situated behind:
    位于…之后的：
    metacarpus.
    掌骨
    1. Change; transformation:
      变化；变形：
      metachromatism.
      异染性
    2. Alternation:
      改变：
      metagenesis.
      世代交替
    1. Beyond; transcending; more comprehensive:
      超越；超出；更为广泛：
      metalinguistics.
      超语言学的
    2. At a higher state of development:
      处于较高发展状态的：
      metazoan.
      多细胞动物的
  5. Having undergone metamorphosis:
    经变形的：
    metasomatic.
    交代的
    1. Derivative or related chemical substance:
      衍生或相关的化学物质：
      metaprotein.
      变性蛋白质
    2. Of or relating to one of three possible isomers of a benzene ring with two attached chemical groups, in which the carbon atoms with attached groups are separated by one unsubstituted carbon atom:
      间位的：（关于）含有两个相连化学单位的苯环中三种可能的异构体之一的，其中与化学单位相连的碳原子被一未替代的碳原子隔开：
      meta- dibromobenzene.
      间的 二溴苯

语源
  1. Greek
    希腊语
  2. from meta [beside, after] * see me- 2
    源自 meta [在…旁边，在…之后] *参见 me- 2
meta- or (sometimes before a vowel) met-

prefix

indicating change, alteration, or alternation
⇒ metabolism
⇒ metamorphosis
(of an academic discipline, esp philosophy) concerned with the concepts and results of the named discipline
⇒ metamathematics
⇒ meta-ethics
See also metatheory
occurring or situated behind or after
⇒ metaphase
(often in italics) denoting that an organic compound contains a benzene ring with substituents in the 1,3-positions
⇒ metadinitrobenzene
⇒ meta-cresol m- Compare ortho- (sense 4), para-1 (sense 6)
denoting an isomer, polymer, or compound related to a specified compound (often differing from similar compounds that are prefixed by para-)
⇒ metaldehyde
denoting an oxyacid that is a lower hydrated form of the anhydride or a salt of such an acid
⇒ metaphosphoric acid
Compare ortho- (sense 5)

Origin

Greek, from meta with, after, between, among. Compare Old English mid, mith with, Old Norse meth with, between

meta-

Word Origin
1
a prefix appearing in loanwords from Greek, with the meanings “after,” “along with,” “beyond,” “among,” “behind,” and productive in English on the Greek model:
metacarpus; metagenesis.
2
a prefix added to the name of a subject and designating another subject that analyzes the original one but at a more abstract, higher level:
metaphilosophy; metalinguistics.
3
a prefix added to the name of something that consciously references or comments upon its own subject or features:
a meta-painting of an artist painting a canvas.
4
Chemistry.
  1. (of acids, salts, or their organic derivatives) a prefix denoting the least hydrated of a series: meta-antimonic, HSbO3;
    meta-antimonous, HSbO2.
    Compare ortho-, pyro-.
  2. a prefix designating the meta position in the benzene ring.
    Abbreviation: m-.
    Compare ortho-, para-1.
Also, especially before a vowel, met-.
Origin
< Greek, prefix and preposition; cognate with Old English mid ‘with’, German mit, Gothic mith

Related Words

  • metabolism
  • metalepsis
  • metanephros
  • metatherian
  • aminophenol
  • dichlorobenzene
meta-1. a prefix meaning 'among', 'together with', 'after', 'behind', 'along with', as in metacarpus, metatarsus.
2. a prefix meaning 'operating at a higher level', as in metalanguage, meta-theory, metalevels.
3. a prefix indicating transposition or change, as in metachromatism, metasomatism.
4. Chemistry
a. a prefix meaning 'containing least water', used of acids and salts, as in metaphosphoric acid, HPO3.
b. a prefix indicating the presence of a benzene ring with two substituents in the 1,3 positions.
[Greek, representing meta (preposition) with, after]
meta-
prefix
or met-
 ETYMOLOGY  New Latin & Medieval Latin, from Latin or Greek; Latin, from Greek, among, with, after, from meta among, with, after; akin to Old English mid, mith with, Old High German mit
1.
  a. occurring later than or in succession to : after
      metestrus
  b. situated behind or beyond
      metencephalon
      metacarpus
  c. later or more highly organized or specialized form of
      metaxylem
2. change : transformation
    metaplasia
3. [metaphysics] : more comprehensive : transcending
    metapsychological
— usually used with the name of a discipline to designate a new but related discipline designed to deal critically with the original one
    metamathematics
4.
  a. involving substitution at or characterized by two positions in the benzene ring that are separated by one carbon atom
      meta-xylene
  b. derived from by loss of water
      metaphosphoric acid
meta-
/metə/  
（在元音或h前亦作met- ）
combining form
1.
denoting a change of position or condition
表示“变化”, “变位”, “改变”, “变换”：

metamorphosis.

2.
denoting position behind, after, or beyond
表示“继…之后”, “位于…之后”, “接着…之后”, “超出”：

metacarpus.

3.
denoting something of a higher or second-order kind
表示“更高级形式的”, “二级的”：

metalanguage

metonym.

4.
Chemistry denoting substitution at two carbon atoms separated by one other in a benzene ring, e.g. in 1,3 positions
【化】表示“介”, “间（位）”：

metadichlorobenzene.

比较ORTHO-和PARA-1.

5.
Chemistry denoting a compound formed by dehydration
【化】表示“偏”：

metaphosphoric acid.

词源
from Greek meta 'with, across, or after'.
meta-, prefix|ˈmɛtə|before a vowel normally met- (also before h, the resulting meth- being pronounced |mɛθ|),repr. Gr. µετα-, µετ- (µεθ-), which occurs separately as the prep. µετά with, after; etymologically corresponding to mid prep. In Gr. the prefix is joined chiefly to verbs and verbal derivatives; the principal notions which it expresses are: sharing, action in common; pursuit or quest; and, especially, change (of place, order, condition, or nature), corresponding to L. trans-. In some few formations µετα- represents the prep. µετά in syntactical combination, with the sense after or behind, as in µετάϕρενον metaphrenon.The words derived from Gr. words containing the prefix, or from assumed Greek types normally constructed, are given in their alphabetical place. The words enumerated in this article are modern formations, in which the prefix is employed in ways not strictly in accordance with Greek analogies. The prefix is often hyphened, and the a remains unelided before a vowel or h.1. a. The supposed analogy of metaphysics (misapprehended as meaning ‘the science of that which transcends the physical’) has been followed in the practice of prefixing meta- to the name of a science, to form a designation for a higher science (actual or hypothetical) of the same nature but dealing with ulterior and more fundamental problems. metaˈchemistry ? nonce-wd., the chemistry of the supersensible. meta-ˈethics, a name applied to the study of the foundations of ethics, esp. of the nature of ethical statements; hence meta-ˈethical a. meta-ˈhistory, inquiry into the principles governing historical events; so meta-hiˈstoric(al adjs., transcending history, controlling the course of history. metaphiˈlosophy, inquiry into the problems ulterior to philosophy or philosophical theories; so metaphiloˈsophical a. metaphysiˈology, a name invented by G. H. Lewes for a doctrine of life and vital phenomena which should base itself on principles outside of and higher than those of physiology and the material organism; hence metaphysioˈlogical a., metaphysiˈologist. metasociˈology (see quot. 1970); so metasocioˈlogical, meta-socioloˈgistic adjs. meta-theˈology, (a) nonce-wd., a profounder theology than that recognized by divines; (b) the philosophical study of the nature of religious language or statements; hence meta-theoˈlogian, meta-theoˈlogical a. Similarly in meta-ˈelement, metaˈgnostic a., [cf. gnostic a.], metaorganism (see quots.); metapheˈnomenal a., existing behind phenomena. See also metageometry, metempiric.1856Emerson Eng. Traits, Lit. Wks. (Bohn) II. 106 It seems an affair of race, or of *metachemistry.1888W. Crookes in Jrnl. Chem. Soc. LIII. 487 The possible existence of bodies which, though neither compounds nor mixtures, are not elements in the strictest sense of the word;—bodies which I venture to call ‘*meta-elements’.1949A. J. Ayer Philos. Ess. (1954) x. 246 All moral theories..are neutral as regards actual conduct. To speak technically, they belong to the field of *meta-ethics, not ethics proper.Ibid., Expounding my meta-ethical theory.1957D. M. Mackinnon Study in Ethical Theory i. 10 The moral philosopher is..preoccupied with..problems of meta-ethics, with the question of where ethical language belongs on the language-map.Ibid. 11 This problem of the relation of duty and good is in some sense meta-ethical.1966G. C. Kerner Revolution in Ethical Theory 1 The problems of ethical theory are thus..problems..of moral language;..they are ‘meta-ethical’.Ibid. ii. 70 Meta-ethics is conceived to be a purely theoretical and ethically neutral enterprise.1973Nature 26 Jan. 249/2 With someone who prefers an incoherent picture of nature, I have no idea how to proceed—just as in meta-ethics, one is powerless to proceed with someone who regards a universe without sentience as possessing greater intrinsic value than one with sentience.1886H. Maudsley Nat. Causes & Supern. Seemings 122 Regions..that are beyond knowledge, not beyond nature; *metagnostic, not metaphysical.1929R. Hughes tr. Deissmann's New Testament in Light of Mod. Res. vi. 172 The holy is pre-historic and *metahistoric.1945G. Dix Shape of Liturgy ix. 264 These *meta-historical facts of the resurrection and ascension.1949Mind LVIII. 411 The value of morals as ‘meta-historical reason’ controlling history and determining the future.1969P. A. Robinson Freudian Left 148 The typical practicing psychoanalyst carefully distinguished the discrete precepts and techniques of his therapeutic science from the ambitious meta-historical adventures in which Freud had indulged.1957Times Lit. Suppl. 27 Dec. 782/2 *Metahistory (which stands in much the same relation to history as metaphysics does to physics).1964C. S. Lewis Discarded Image viii. 175 What Virgil puts forward in a mythical form is precisely meta-history.1866Myers Phantasms of Living II. 278 That this body of ours..is interpenetrated with a ‘*meta⁓organism’ of identical shape and structure, and capable sometimes of detaching itself from the solid flesh.1844H. P. Tappan Elem. Logic 12 Those objects which, by supposition, lie beyond immediate consciousness, are *metaphenomenal.1882G. S. Morris Kant's Critique vi. (1886) 189 No distinction of phenomena from the metaphenomenal, as objects of knowledge.1942Mind LI. 284 ‘Why are no philosophical disputes ever settled?’ It is with this ‘*metaphilosophical’ problem..that Professor Ducasse's book..is concerned.1964Philos. Rev. LXXIII. 554 Blakeley..proposes an original and provocative metaphilosophical thesis.1970M. Lazerowitz in Metaphilosophy I. 91 *Metaphilosophy is the investigation of the nature of philosophy, with the central aim of arriving at a satisfactory explanation of the absence of uncontested philosophical claims and arguments.1876Lewes in Fortn. Rev. Apr. 479–86 *Metaphysiology. *Metaphysiological. *Metaphysiologists.1959R. Bierstedt in L. Gross Symposium Sociol. Theory 137 The distinction between methodological (or *metasociological) theory on the one hand and substantive (or sociological) theory on the other.1964P. Meadows in I. L. Horowitz New Sociol. 448 Formulations which phrase a *meta-sociologistic model, that is, the theme that beyond the teeming and changing varieties of social life and differentiated functions there are social patterns generating and guiding the social work life.1958W. Stark Sociol. of Knowl. i. iv. 197 A *metasociology which would be..a study of man as he appears in all societies, of man as such.1970G. A. & A. G. Theodorson Mod. Dict. Sociol. 254 Metasociology, the branch of sociological theory that is concerned with the methods and logic of sociological inquiry, rather than with propositions, principles, and generalizations about social life.1967Philosophy XLII. 197 The *meta-theologian..claimed that Christian discourse, as it stands, is incoherent.1969R. S. Heimbeck Theol. & Meaning i. 20 Since 1955, the quantity of *metatheological literature has multiplied many times over.a1615Donne Ess. (1651) 129 A *Meta-theology and a Superdivinity above that which serves our particular consciences.1957I. M. Crombie in B. Mitchell Faith & Logic ii. 77 It is from reading theology, not meta-theology, that one can come to understand how theological statements work.1959P. Munz Probl. Relig. Knowl. 12 The meta-theology which I have put forward neither stands nor falls with any one particular theological opinion which I have expressed or implied.1967Philosophy XLII. 195 One piece of meta-theology which has won wide acceptance..is that ‘God’ is not a substance-word.b. Prefixed to various classificatory words to designate concern with the ulterior or underlying principles peculiar to that classification, as metacriterion, metacriticism, (hence metacritical adj., -ally adv.), metasystem, metatheorem, metatheory (so metatheoretic, -ical adjs.).1953C. E. Bazell Ling. Form v. 63 Universality of application is only one *meta-criterion for the choice of criteria.1954C. F. Hockett in Word X. 233 Neither any existing version of IA nor any existing version of IP meets all the metacriteria.1963Listener 3 Jan. 21/1 They [sc. the techniques of modern criticism] could make exciting sense (if not in strictly critical terms, then in *metacritical ones) of works which would have seemed absurd if taken literally.1970A. Rodway Truths of Fiction i. 9 Concentrate, metacritically, on what the text refers to... Study of form is purely critical, of content either critical or metacritical; of what the work leads to, whether in the way of causes or effects or general topics, purely metacritical.1966Philosophy XLI. 320 The aesthetician..is concerned (among other things) with *metacriticism.1970A. Rodway Truths of Fiction i. 6 The logical primacy of intrinsic criticism suggests that extrinsic criticism might also be called metacriticism.1956J. H. Woodger tr. Tarski's Logic, Semantics, Metamath. 116 It is possible to construct a particular science, namely the ‘*metasystem’, in which the given system is subjected to investigation.1964P. Meadows in I. L. Horowitz New Sociol. 452 Metasystem or general systems theory.1969New Scientist 4 Sept. 461/1 What Professor Beer is asking for is that we approach the problem at a higher level—the level of the ‘metasystem’.1940W. V. Quine Math. Logic ii. 89 We establish theorems wholesale, by arguments which show that the appropriate sequences could be found for each particular case. Such principles, describing general circumstances under which statements are theorems, will be called *metatheorems.1943Mind LII. 267 Closely connected with the distinction between use and mention is that between a theorem and a metatheorem, the latter being, as the name suggests, a theorem about theorems, wherein symbols are mentioned and names of symbols used.1971G. Hunter Metalogic p. xii, Complete proofs for metatheorems (theorems about a system) are..more laborious for natural deduction systems than for axiomatic ones.Ibid. i. 11 A theorem about a theorem (also called a metatheorem) is a true statement about the system expressed in the metalanguage.1965B. Mates Elem. Logic viii. 128 We are now in a position to..give informal proofs of a number of *metatheoretic generalizations about the theorems of logic.1953Mind LXII. 557 The *meta⁓theoretical problems of logical calculi, such as independence of axioms, completeness, and decision methods.1956E. H. Hutten Lang. Mod. Physics iii. 81 When we want to explain how scientific theories are constructed..we must speak about them; and this requires a suitable terminology. This *meta-theory, or methodology, is as necessary to science as grammar is to ordinary language.1963Language XXXIX. 208 A metatheory for semantics must also exhibit the relations between semantics and other areas of linguistics.1974Sci. Amer. May 122/3 He outlines a metatheory in which the universe at every micromicroinstant branches into countless parallel worlds.2. Path. Used to form adjs. applicable to diseases or symptoms, with the sense ‘arising subsequently to’ (that which is indicated in the body of the word). meta-arˈthritic, following or consequent on gout. metapneuˈmonic, following or consequent on pneumonia. metaˌsplenomeˈgalic [Gr. σπλήν spleen, µεγαλο-, µέγας great], preceded by enlargement of the spleen.1898Allbutt's Syst. Med. V. 862 The *meta-arthritic endocarditis.Ibid. 164 *Metapneumonic pleurisy.1905H. D. Rolleston Dis. Liver 308 *Metasplenomegalic hypertrophic biliary cirrhosis.3. Anat. and Zool. Used to express the notion of ‘behind’ (cf. metaphrenon); also often that of ‘hinder’, ‘hindmost’, ‘situated at the back’; sometimes correlated with pro- and meso-. metaˈbranchial a. [Gr. βράγχια gills], applied to a division of the carapace of a crab situated behind and to one side of the mesobranchial lobe. metaˈfacial a., applied to the angle which the pterygoid processes make with the base of the cranium. ‖ metapaˈrapteron Ent., the parapteron of the metathoracic segment; hence metapaˈrapteral a. (Cent. Dict.). metapneustic |-ˈpnjuːstɪk| a. Ent. [Gr. πνευστικ-ός relating to breathing], having a single pair of spiracles situated at the posterior end of the abdomen. metapore |ˈmɛtəpɔə(r)| [pore], an orifice in the pia mater covering the fourth ventricle of the brain; the foramen of Magendie. ‖ metascuˈtellum, ‖ metaˈscutum, the scutellum and scutum (respectively) of the metathorax of an insect; hence metascuˈtellar, metaˈscutal adjs. (in recent Dicts). metasthenic |-ˈsθɛnɪk| a. Ent. [Gr. σθένος strength], having most strength in the hinder part of the body; n. pl., a division of insects characterized in this way.1877*Metabranchial [see mesobranchial s.v. meso-].1878Bartley tr. Topinard's Anthrop. ii. iii. 291 The *meta⁓facial angle of Serres, which the pterygoid processes form with the base of the skull.1891Bernard tr. Lang's Comp. Anat. i. 482 The tracheal system is then called *meta⁓pneustic.1899D. Sharp Insects ii. 450 (Camb. Nat. Hist.) Some begin life in the metapneustic state, and afterwards become amphipneustic.1889Buck's Handbk. Med. Sci. VIII. 123/2 The orifice here called *metapore.1899D. Sharp Insects ii. 313 (Camb. Nat. Hist.) The hind margin of the *metascutellum.1863Dana in Amer. Jrnl. Sci. Ser. ii. XXXVI. 323 The condition may be described as..*Metasthenic..if a posterior pair [of locomotive organs] is the more important and the anterior are weak or obsolete.Ibid. 335 The two highest divisions, Prosthenics and Metasthenics.4. Bot. and Zool. Used with the sense ‘later’, ‘subsequent’, ‘more developed’; sometimes indicating the latest of three stages, correlated with proto- and meso-. ˈmetacneme [Gr. κνήµη tibia; cf. cnemial a.], a secondary mesentery which develops in some Zoantherians; so metacˈnemic a. metaneˈphridium [a. G. metanephridium (B. Hatschek Lehrbuch der Zoologie (1889) II. 162): see nephridium], in certain invertebrates, a nephridium with a ciliated opening into the coelom; so metaneˈphridial a. ˈmetaphase, [a. G. metaphase (E. Strasburger 1884, in Arch. f. mikrosk. Anat. XXIII. 260)], the stage in mitotic or meiotic nuclear division which follows prophase and precedes anaphase, during which the chromosomes become arranged with their centromeres on the equatorial plate; a dividing nucleus at this stage. metaˈphloem, a constituent of primary phloem which is formed after the earliest development of the shoot. ˈmetaphyte, ‖ meˈtaphyton, a multicellular plant; hence metaˈphytic a. (Jackson Gloss. Bot. Terms 1900). metaˈtracheal a. arch., usu. in phrase metatracheal parenchyma, describing the structure of wood in which concentric bands of parenchyma independent of the vessels are formed. metaˈxylem, a constituent of the primary xylem which is formed after the earliest development of the shoot.1900J. E. Duerden in Johns Hopkins Univ. Circular XIX. 47/2 The first six pairs of mesenteries are found to differ so essentially in their mode of origin and significance from the mesenteries appearing later that I find it convenient to have some word which will include them either as a whole or individually. I therefore propose for them the term ‘Protocnemes’, and shall refer to the mesenteries subsequently developed as ‘*Metacnemes’.1902Ann. & Mag. Nat. Hist. IX. 397 The different fundamental types of metacnemic sequence now known within the Actiniaria and Madreporaria.Ibid., The metacnemes arise as unilateral pairs at one, three, seven, etc. regions within all the six primary exocoeles.1940L. H. Hyman Invertebrates I. vii. 589 In most forms [of sea anemone] additional septa called metacnemes arise in pairs.1940L. H. Hyman Invertebrates I. ii. 37 The nephridial system of the coelomate invertebrates is of the *metanephridial type, i.e., the nephridial tubules begin as coelomic openings.1963R. P. Dales Annelids v. 98 The metanephridial funnels or postnephridial solenocytes lie in the coelomic fluid.1930W. R. Coe in Biol. Bull. LVIII. 208 This type of excretory organ may be designated a *metanephridium in order to distinguish it from the more usual type, protonephridium, found in nemerteans.1967E. J. W. Barrington Invertebr. Struct. & Function xii. 236 The nephridium occurs in two main forms, the protonephridium and the metanephridium.1890Syd. Soc. Lex., *Metaphase,..the stage of the nuclear spindle in karyokinesis.1887tr. Strasburger's Bot. 363 Now begin the phases of separation and rearrangement of the daughter-segments, the *metaphases of division.1924E. W. Macbride Study of Heredity ii. 42 The formation of the equatorial plate and of the spindle is known as the metaphase.1961Lancet 26 Aug. 489/1 Metaphases in freshly aspirated sternal and iliac crest marrow were analysed.1962Ibid. 26 May 1098/2 Rich crops of cells in metaphase were obtained twice.1969Times 20 June 7/3 Shortly before ovulation the oocyte goes through the process of cell division and then starts to divide a second time, a stage known as metaphase 2.1973Nature 1 June 290/2 Well-spread metaphases were photographed with a 95 × fluoride objective.1902Encycl. Brit. XXV. 413/1 In many cases external protophloem..can be distinguished from *metaphloem.1965K. Esau Plant Anat. (ed. 2) xii. 292 The sieve elements of the metaphloem are commonly longer and wider than those of the protophloem.1893Shipley Zool. Invert. 3 The *Metaphyta and Metazoa, or the multicellular plants and animals.1897Hartog in Nat. Science Oct. 234 The higher animals and plants we term Metazoa and *Metaphytes respectively.1908Boodle & Fritsch tr. Solereder's Systematic Anat. Dicotyledons II. 1143 The wood parenchyma generally forms tangential bands (known as the ‘*metatracheal’ parenchyma in contrast to the ‘paratracheal’ parenchyma, aggregated round about the vessels).1933Tropical Woods XXXVI. 9 Metatracheal parenchyma, aggregated wood parenchyma forming concentric laminae, mostly independent of the vessels and vascular tracheids.1970Wilson & White Jane's Struct. Wood (ed. 2) vi. 116 Apotracheal parenchyma may occur as..tangentially arranged sheets of cells..or in more extensive tangential bands... The two latter types are sometimes referred to as metatracheal parenchyma but this term is better avoided.1902Encycl. Brit. XXV. 415/1 Sometimes..the centre of a bulky root stele has strands of *metaxylem..scattered through it.1965K. Esau Plant Anat. (ed. 2) xi. 243 The metaxylem, which appears after the protoxylem, is in the process of differentiation while the shoot is elongating.5. Geol. a. In imitation of metamorphism, the prefix has been used irregularly to form words referring to certain specific varieties of metamorphic processes, as metaˈchemic a., metaˈpepsis (hence metaˈpeptic a.), metaˈtaxis (hence metaˈtaxic a.), meˈtatropy: see quots.1893Geikie Text-bk. Geol. iv. viii. 596 note, Metasomatosis, metasomatic..and *metachemic applied to chemical metamorphism or alteration of constitution or substance.1878Kinahan Geol. Irel. 175 One kind of Metamorphism is Regional, or extends over large areas. The rocks affected by it seem to have been under the influence of intensely heated water or steam, which, as it were, stewed them, from which the action may be called *metapepsis.Ibid. 177 *Metapeptic rocks.Ibid., Metapeptic action.1889A. Irving Metamorph. Rocks 65 *Metataxic work done by Solar and Lunar Tides.Ibid. 5 Slaty cleavage and its concomitant phenomena..will be considered under the term *Metataxis. Footn. This term is preferred to the cognate term Metastasis (Bonney).Ibid., *Metatropy, or changes in the physical characters of rock-masses.b. Prefixed to the names of rocks or of classes of rock to indicate that they have undergone metamorphism, as metadiorite, metadolerite, metagranite, metasediment (hence metasedimentary adj.), metasyenite, metavolcanic; also metaigneous adj.1876J. D. Dana in Amer. Jrnl. Sci. & Arts XI. 121 The rocks are..Metamorphic doleryte, metamorphic diabase, and metamorphic melaphyre... To distinguish these metamorphic rocks from the igneous of the same composition, they are named, on my suggestion, metadoleryte, metadiabase, and metamelaphyre. The examples are part of a long series of rock species which have representatives both among igneous (or intrusive) and metamorphic rocks. Other kinds are dioryte and metadioryte, syenyte and metasyenyte, felsyte and metafelsyte, etc.1920A. Holmes Nomencl. Petrol. 154 Meta-, a prefix used before the names of igneous rocks to signify that the mineral and chemical composition of the latter have been modified by alteration.1942M. P. Billings Struct. Geol. xii. 215 Metasediments, metavolcanics, and meta-igneous rocks are metamorphic rocks derived, respectively, from sedimentary, volcanic, and igneous rocks.1961J. Challinor Dict. Geol. 126/1 Meta-(rock). A metamorphosed rock which was originally of the kind or type included in the name. Thus ‘metasediment’ or ‘metasedimentary rock’, ‘meta-igneous rock’, ‘metadolerite’, &c.1973Nature 21 Sept. 120/1 The metasediments occur in a (refolded) syncline among granitic gneisses.Ibid. 139/2 The lithology of some of these enclaves strongly suggests that they were originally supracrustal rocks similar to those that occur at Isua, including metasedimentary ironstones.6. In Chemistry. a. Meta- is used to designate compounds derived from, metameric with, or resembling in composition those to the names of which it is prefixed, as metachloral, metaldehyde, etc. More systematically, it is used to distinguish one class of acids and their corresponding salts from another class (the ortho- acids) consisting of the same elements in different proportions, the meta- acids containing one, two, or three molecules of water less than the ortho- acids; the salts of these acids have names formed by replacing -ic by -ate. (A few of these compounds will be found in their alphabetical place; the most important of those remaining are placed below.)The use of the prefix in chemistry was first introduced by Graham in 1833 (Phil. Trans. 253): see metaphosphate, metaphosphoric. The more definite use (correlated with ortho-) was introduced by Odling in 1859.1861Odling Man. Chem. i. xiii. Contents, Phosphorus and Oxygen... Meta-compounds.1892Morley & Muir Watts' Dict. Chem., Meta-acids and meta-salts.metaˈboric acid, ‘a white powder, obtained by heating ordinary boric acid or orthoboric acid to 100° C.’ (Syd. Soc. Lex. 1890). metaˈcellulose, the substance of which the cell-walls of fungi consist, differing from ordinary cellulose. metaˈchloral, a white amorphous solid formed by the action of sulphuric acid on chloral. metaˈcresol, one of the three modifications of cresol (ortho-, meta- and paracresol). metaˈgelatin, a form of gelatin that remains fluid, used in photography, made by boiling and cooling a solution of gelatin several times. metaˈgummic = metarabic. metaˈlumina, a name given to the soluble dihydrate of aluminium obtained by the action of heat on a solution of the acetate. metaˈmorphia, metaˈmorphine: see quots. meˈtamylene, ‘a compound polymeric with amylene, contained in the higher portion of the distillate produced by heating amylic alcohol with sulphuric acid’ (Watts). meta-oˈleic (also metoˈleic) acid, an acid resulting from the action of sulphuric acid on oleic acid. metaoxybenˈzoic acid, ‘an isomeride of salicylic acid’ (Syd. Soc. Lex.). metaˈpectic acid, the final product of chemical action upon pectin. metaˈpectin, an isomeric form of pectin produced by boiling with dilute acids. metaˈprotein, an intermediate product in the hydrolysis of a protein which is soluble in acids and alkalis but insoluble in water. meˈtarabic acid, ‘a substance, also called Cerasin, obtained by heating gum arabic to 100° C.’ (Syd. Soc. Lex.). meˈtarsenic acid: see quot. metasiˈlicic acid, a transparent vitreous substance obtained by drying silicic acid over anhydrous sulphuric acid. metatarˈtaric acid, a modification of tartaric acid obtained by melting it. metatiˈtanic acid: see quot. metaˈtoluic acid: see quot. metaˈtungstic acid, a yellow solid used as a test for alkaloids.1863Watts Dict. Chem. I. 639 Nearly all borates may be arranged in two classes, orthoborates and *metaborates (so called from their analogy with the ortho- and metaphosphates and silicates).1885G. L. Goodale Physiol. Bot. (1892) 35 note, Cellulose dissolves at once in cuprammonia; paracellulose, only after the action of acids; *metacellulose, not even then.1876Encycl. Brit. V. 676/2 When kept for some days..chloral undergoes spontaneous change into the polymeride *metachloral,..a white porcelaneous body.1881Watts Dict. Chem. VIII. 1286 *Metacresol.1858Sutton Dict. Photogr., *Metagelatine.1879Encycl. Brit. X. 131/2 Gelatin so treated [with hot solutions of oxalic acid] has been called metagelatin.1862Watts tr. Gmelin's Handbk. Chem. XV. 205 *Metagummic Acid.Ibid. 206 *Metagumate of lime.1862Graham in Jrnl. Chem. Soc. XV. 247 Two soluble modifications of alumina appear to exist, alumina and *metalumina.1890Syd. Soc. Lex., *Metamorphia, one of the alkaloids separated from laudanum.1865Watts Dict. Chem. III. 976 *Metamorphine, an opium-base, the hydrochlorate of which is obtained, as a residue, in the preparation of opium-tincture by means of lime and sal-ammoniac.1838T. Thomson Chem. Org. Bodies 124 M. Fremy was unable to obtain any of the *meta-oleates in a crystallized state.Ibid. 123 *Meta-oleic acid differs from it [sc. oleic acid] by containing two additional atoms of water.1873C. H. Ralfe Phys. Chem. 132 The parapeptone being removed by filtration, the neutralized filtrate is again acidified when another precipitate, *metapeptone, is thrown down.1909Cent. Dict. Suppl., *Metaprotein.1911Encycl. Brit. XIX. 922/1 The first result of the action of this secretion on protein matter is to render it soluble—a metaprotein or acid albumin (syntonin) being formed.1949G. B. Bachman Org. Chem. xviii. 220 Primary derivatives: proteins, metaproteins, and coagulated proteins.1861Odling Man. Chem. i. 338 *Metarsenates and pararsenates are converted respectively into monometallic and dimetallic common arsenates by the action of water.Ibid., *Metarsenic acid HAsO3, is formed by gradually heating common arsenic acid to a temperature of 200°–205°.1859*Meta-silicates [see ortho- 2].1872Watts Dict. Chem. VI. 825 *Metasilicic Acid.1848Brande Chem. (ed. 6) 1315 Saccharic Acid... Erdmann, who repeated Guérin Varry's experiments in 1837, regarded this acid as isomeric with tartaric acid, and called it *metartaric acid.1856Watts tr. Gmelin's Handbk. Chem. X. 328 *Metatartrate.1854R. D. Thomson Cycl. Chem., *Metatitanic Acid, Ti3O6. Small shining plates, separating when anhydrous bichloride of titanium is saturated with carbonate of barytes, adding water and boiling rapidly.1873Jrnl. Chem. Soc. XI. 276 Uvitic acid prepared by Finckh's process from pyrotartaric acid decomposes into *metatoluic acid when heated with lime.1854R. D. Thomson Cycl. Chem., *Metatungstic Acid.b. In the names of isomeric benzene di-derivatives, meta- denotes those compounds in which the two radicals that replace hydrogen in the benzene-ring are regarded as attached to alternate carbon atoms. (The use was introduced by Körner in 1867; cf. ortho- 2 b, para- 2 b.) So also metacoumaric acid, metacoumarate.As the number of these is unlimited, no list is given; a few examples are appended in the quots. below.1873Jrnl. Chem. Soc. XI. 1147 The metadiamidobenzene of Griess.1875Ibid. XIII. 156 When metachlorophenol is fused with potash, it is readily converted into pyrocatechin; the relation between metanitrophenol, metachlorophenol, and pyrocatechin being thus proved.Ibid., Metanitrometachlorophenol appears to be converted into metanitrodichlorophenol by the action of chlorine.1876H. E. Armstrong ibid. I. 212 The three Isomeric Dibromobenzenes... Paranitrobromobenzene,..Metanitrobromobenzene,..Orthonitrobromobenzene.1879Watts Dict. Chem. VIII. 210, α- or metapherylene-diamine.1899J. Cagney Jaksch's Clin. Diagn. vii. (ed. 4) 381 Metadiamido-benzol is coloured a deep yellow by nitrites.1905Brit. Med. Jrnl. 27 May 1144 They [i.e. benzenoid ortho- and para- compounds] both differ markedly from their isomerides of the meta-series... In the meta-compound these groups [i.e. ortho-coumaric and para-coumaric acids] are in apothetic positions with respect to each other so that the meta-acid might be expected to exhibit the dual properties of a phenol and a cinnamic acid.Ibid., Sodium meta-coumarate... The meta-coumaric acid required for this preparation was produced synthetically from meta-nitrobenzaldehyde.7. Min. Used to designate a mineral that is found along with another or is closely related to it, spec. denoting (partial) dehydration; as metabrushite (a calcium phosphate allied to brushite), metachlorite, metacinnabar(ite, metagadolinite, metalonchidite, metanocerite, metasericite, metastibnite, metavoltine (see A. H. Chester Dict. Min. 1896).1854Dana Syst. Min. (ed. 4) II. 297. 1865 Julien in Amer. Jrnl. Sci. Ser. ii. XL. 371 Metabrushite. This new mineral has been observed to occur only with the guano as a matrix.Add:[1.] [b.] metacondition.1972Z. Bar-Lev in Glossa VI. 180 The assumption that a definition of the notion ‘meaning’ as a linguistic level—a definition consisting of a set of ‘semantic *metaconditions’ that specify the way in which semantic properties and relations must be represented in semantic structure—is crucial to linguistic theory.1977Canad. Jrnl. Linguistics XXII. 9 Kim..proposes a meta-condition involving eight phonetic degrees of aperature which manifests itself in several phonological rules in Korean.1985Byte Aug. 52/2 Metaconditions, metaprograms, tail-recursive definitions, and user-created modules let you experience the full power of Prolog.
meta-
word-forming element meaning 1. "after, behind," 2. "changed, altered," 3. "higher, beyond;" from Greek meta (prep.) "in the midst of, in common with, by means of, in pursuit or quest of," from PIE *me- "in the middle" (cognates: German mit, Gothic miþ, Old English mið "with, together with, among;" see mid). Notion of "changing places with" probably led to senses "change of place, order, or nature," which was a principal meaning of the Greek word when used as a prefix (but also denoting "community, participation; in common with; pursuing").
Third sense, "higher than, transcending, overarching, dealing with the most fundamental matters of," is due to misinterpretation of metaphysics as "science of that which transcends the physical." This has led to a prodigious erroneous extension in modern usage, with meta- affixed to the names of other sciences and disciplines, especially in the academic jargon of literary criticism.
meta- /ˈmɛtə/ prefix. Before a vowel or h also met-.
ORIGIN: Greek met(a)- (meth-), occurring separately as the preposition meta with, after. In sense 1 after metaphysics.
1.Denoting a nature of a higher order or more fundamental kind, as metalanguage, metatheory.
2.Chiefly Anatomy & Zoology. Denoting position behind, at the back, or after.
3.Biology. Denoting occurrence or development at a later stage or time.
4.Chemistry.a. Denoting derivation from, metamerism with, or resemblance to a given compound; spec. in names of salts and acids containing fewer molecules of water.b. (Freq. italicized.) Denoting substitution in a benzene ring at carbon atoms separated by one carbon atom. Cf. ortho- 2b, para-13.
5.Geology. Denoting metamorphism.
6.Denoting change, alteration, or effect generally.
 DERIVATIVE meˈtabasis noun, pl. -ases /-əsi:z/, a transition, spec. (a) Rhetoric from one subject or point to another; (b) Medicine from one remedy etc. to another: M16.
metabioˈlogical adjective of or pertaining to metabiology E20.
metabiˈology noun a hypothetical science supposed to deal with phenomena of living organisms in a manner beyond the scope of conventional biology E20.
metaˈchrosis noun [Greek khrōsis colouring] Zoology ability to change colour L19.
metaˈcinnabar noun (Mineralogy) mercuric sulphide, occurring as a black mineral crystallizing in the cubic system, dimorphous with cinnabar L19.
metacogˈnition noun (Psychology) awareness and understanding of one's own thought processes, esp. regarded as having a role in directing those processes L20.
metacommuniˈcation noun communication taking place with or underlying a more obvious form of communication; sing. & in pl. principles or theories about communication derived from the study of communication: M20.
metacommuniˈcational, metacoˈmmunicative adjectives concerned with or pertaining to metacommunication M20.
metaˈconal adjective (Zoology) of, pertaining to, or of the nature of a metacone L19.
metacone noun (Zoology) a cusp on the posterior buccal corner of the tribosphenic upper molar tooth L19.
metaˈconid noun (Zoology) a cusp on the posterior lingual corner of the trigonid of the tribosphenic lower molar tooth L19.
metaˈcontrast noun (Psychology) a change, esp. a diminution, in the after-effect of a visual stimulus as a result of a rapidly succeeding second stimulus M20.
metaconule /-ˈkəʊnjʊl/ noun (Zoology) an intermediate cusp between the hypocone and the metacone of a mammalian upper molar tooth L19.
metacryst noun (Petrography) a large crystal formed in a metamorphic rock by recrystallization E20.
metadata noun (Computing) a set of data that describes and gives information about other data L20.
meta-ˈethical adjective of or pertaining to meta-ethics M20.
meta-ˈethics noun the branch of knowledge that deals with the foundations of ethics, esp. of ethical statements M20.
metafiction noun (a work of) fiction which does not rely on traditional ideas of realism or does not conform to experience of the world M20.
metaˈfictional adjective pertaining to or of the nature of metafiction L20.
metafile noun (Computing) (a graphics file stored in) a device-independent format that can be exchanged between different systems or software L20.
metagaˈlactic adjective (Astronomy) of, pertaining to, or designating the (or a) metagalaxy M20.
metaˈgalaxy noun (Astronomy) the entire system of galaxies and other bodies which makes up the universe; a cluster or group of galaxies: M20.
metageoˈmetrical adjective of or pertaining to metageometry L19.
metageˈometry noun non-Euclidean geometry L19.
metagnathism /mɛˈtagnəθɪz(ə)m/ noun (Ornithology) metagnathous condition L19.
metagnathous /mɛˈtagnəθəs/ adjective (Ornithology) having or designating a beak with crossed tips L19.
metalaw noun a hypothetical legal code based on the principles underlying existing legal codes and designed to provide a framework of agreement between diverse legal systems M20.
metaˈlegal adjective of or pertaining to (the principles of) metalaw M20.
metamessage noun an ulterior or underlying message, an innuendo; Advertising a statement that relies on implication rather than exhortation, a message conveyed in this way: M20.
metamict adjective [Greek miktos mixed] (of a mineral) made amorphous through the radioactive decay of atoms contained in it E20.
metamictiˈzation noun the process of becoming metamict; the state of being metamict: M20.
metamictness noun metamict character M20.
metaneˈphridial adjective (Zoology) of or pertaining to a metanephridium M20.
metaneˈphridium noun, pl. -dia, Zoology a nephridium whose inner end opens into a coelom, as in many worms M20.
metaˈnotum noun (Entomology) the dorsal part of the metathorax of an insect M19.
metaphone noun (Linguistics) each of two or more equally acceptable variants of a phoneme (e.g. the first vowel /ʌɪ/ or /i:/ of either) M20.
metaˈphonic adjective (Philology) affected by or involving metaphony E20.
meˈtaphonized adjective (Philology) affected by metaphony L19.
meˈtaphony noun (Philology) umlaut (the vowel change) L19.
metaˈpodial noun (Anatomy & Zoology) a metacarpal or metatarsal bone L19.
metaˈpodium noun (Zoology) the posterior lobe of the foot of a mollusc M19.
metarhoˈdopsin noun (Biochemistry) either of two interconvertible intermediates (the orange metarhodopsin I and the yellow metarhodopsin II) that are formed from lumirhodopsin when rhodopsin is bleached by light and undergo spontaneous hydrolysis to retinal and opsin M20.
metarule noun a convention or universal rule in a symbolic system, esp. a linguistic system M20.
metascience noun the branch of philosophy that has science as its subject M20.
metascienˈtific adjective of or pertaining to metascience M20.
metascienˈtifically adverb in a metascientific manner M20.
metaˈsternal adjective (Entomology & Anatomy) of, pertaining to, or of the nature of a metasternum E19.
metaˈsternum noun, pl. -na, -nums (a) Entomology the ventral piece of the metathorax of an insect; (b) Anatomy = xiphisternum: E19.
meta-talk noun talk in which there are hidden meanings M20.
metathoˈracic adjective (Entomology) of, pertaining to, or of the nature of a metathorax M19.
metaˈthorax noun (Entomology) the third, posterior segment of the thorax of an insect E19.
metavolˈcanic noun & adjective (Geology) (designating) a volcanic rock that has been subjected to metamorphosis M20.
metaxylem /mɛtəˈzʌɪləm/ noun (Botany) the later-formed part of the primary xylem, maturing after elongation of the plant tissue is complete L19.
☞ meta
meta-
\in pronunciations below, | ̷ ̷ ̷ ̷.|med.ə or |metə\ prefix
or met-
Etymology: New Latin & Medieval Latin, from Late Latin or Greek; Late Latin, from Greek, from meta between, with, after; akin to Old English mid, mith with, Old Saxon mid, midi, Old High German mit, miti with, Old Norse meth with, between, Gothic mith with, and perhaps to Old English midd mid — more at mid
1.
 a. : occurring later : in succession to : after
  < metachronism >
  < metabiosis >
  < metagenesis >
  < metainfective >
 b. : situated behind : posterior
  < metapore >
  < metanephron >
 c. : later or more highly organized or specialized form of
  < Metazoa >
  < metaphyte >
 d. : with : occurring with
  < metacinnabar >
2.
 a. [Middle French & Latin; Middle French, from Latin, from Greek, from meta] : change in : transformation of
  < metamorphosis >
  < metaplasia >
 b. : produced by metamorphism
  < metadiorite >
  < metasediment >
3.
 a. [Middle English, from Medieval Latin, from Greek meta after, as used in ta meta ta physika the (works) after the physics — more at metaphysics] : beyond : transcending
  < metaphysics >
  < metapsychosis >
  < metageometry >
  < metabiological >
  < metempirics >
 b. : of a higher logical type — in nouns formed from names of disciplines and designating new but related disciplines such as can deal critically with the nature, structure, or behavior of the original ones
  < metalanguage >
  < metatheory >
  < metasystem >
4. [International Scientific Vocabulary, from Greek, with, after, from meta]
 a. : one that is isomeric with, polymeric with, or otherwise closely related to
  < metaldehyde >
  — in names of chemical compounds; compare para- I 2a
 b.
  (1) : relation of two positions in the benzene ring that are separated by one carbon atom
  (2) meta-, usually italic : derivative that has two substituting groups occupying such positions — abbr. m-
   < meta-xylene or m-xylene is 1,3-dimethyl-benzene >
   — compare orth- 3b, para- I 2b
 c. : regarded as derived from (the ortho acid) by loss of water (as of one molecule of water from each molecule of acid) — in names of inorganic acids
  < metaphosphoric acid >
  — compare orth- 3a, pyr- 2a
 d. : derived from by removal or loss of some or all of the contained water — in names of minerals
  < metaautunite >
  < metahalloysite >

meta- 1
  • met- (prevocalic)

    • Prefix

    1. anatomy and zoology Behind [From XIX C.]
    2. botany and zoology Later or subsequent [From XIX C.]
    3. obsolete, architecture and zoology Situated between two segments [From XIX C.]
    4. chemistry Having fewer molecules of water than the ortho- equivalent [From XIX C.]
    5. organic chemistry in isomeric benzene derivatives, having the two substituents in alternate positions; contrasted with ortho- and para- [From 1833]

    Etymology

    From Ancient Greek μετα- (meta-), from μετά (metá), from Mycenaean Greek 𐀕𐀲 (me-ta), possibly from Proto-Indo-European *meth₂ (“in the middle”).

    meta- 2

    Prefix

    1. transcending, encompassing
    2. Pertaining to a level above or beyond. For example, metadata is data that describes data, metalanguage is language that describes language, etc. [From XVII C.]
    3. Having analogies with metaphysics

    Etymology

    Back-formation from metaphysics.

    meta- 3

    Prefix

    1. geology Analogies and derivatives of metamorphism [From XIX C.]

    Etymology

    Back-formation from metamorphism.

    meta- 4

    Prefix

    1. pathology Consequent on

    Etymology

    Back-formation from metastasis.

    Derived terms

    English words prefixed with meta-


    External links

  • List of Ancient Greek words starting with meta-, on Perseus

    • 前缀：meta- 表示“超过, 改变”

    metabolism 新陈代谢（mata+bol抛＋ism→抛〔旧〕变新）

    metamorphism 变形；变性（meta+morph形状+ism→变形）

    metaphor 隐喻（meta+phor带来→〔语言〕改变着说→隐喻）

    metaphysis 形而上学（meta+physics物质；物理→物质之上的学科→形而上学）

    metapsy 超心理学，灵学（meta+psych心灵＋ology学科）

    前缀：meta-

    1、超

    metaphysical 超自然的，形而上学的

    metachemistry 超级化学

    metageometrical 超几何学的

    metamaterialist 超唯物论者

    metaculture 超级文化

    2、变化

    metamorphosis 变形

    metagenesis 世代交替

    metachromatism 变色反应

    metachrosis 变色机能
    随便看

    　

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