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词汇 sesqui-
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sesqui-
pref.（前缀）
  1. One and a half:
    一个半：
    sesquicentennial.
    一百五十周年

语源
  1. Latin sēsqui-
    拉丁语 sēsqui-
  2. sēmis [a half] * see sēmi-
    sēmis [一半] *参见 sēmi-
  3. -que [and] * see k we
    -que [和] *参见 k we
sesqui-

prefix

indicating one and a half
⇒ sesquicentennial
(in a chemical compound) indicating a ratio of two to three
⇒ sesquioxide

Origin

from Latin, contraction of semi- + as as2 + -que and

sesqui-

Word Origin
1
a combining form meaning “one and a half,” used in the formation of compound words:
sesquicentennial.
Origin
< Latin sēsqui- < *sēm(i)sque, equivalent to sēmis half-unit, semis + -que and (cognate with Greek té, Sanskrit ca, Gothic -uh)

Related Words

  • phosphorus sesquisulfide
  • semi-
  • sesquicarbonate
  • sesquicentennial
  • sesquioxide
  • sesquipedalian
sesqui-1. a word element meaning 'one and a half', as in sesquicentennial.
2. a prefix applied to compounds where the ratio of radicals is 2:3, as in iron sesquichloride (Fe2Cl3).
[Latin, contraction of sēmis a half + -que besides]
sesqui-
combining form
 ETYMOLOGY  Latin, one and a half, half again, literally, and a half, from semis half of an as, one half (probably from semi- + as as) + -que (enclitic) and; akin to Greek te and, Sanskrit ca, Gothic -h, -uh
1. one and a half times
    sesquicentennial
2. containing half again as many atoms
    sesquiterpene
3. intermediate : combination
    sesquicarbonate
sesqui-
/ˈseskwɪ/  
combining form
denoting one and a half
表示“一个半”：

sesquicentenary.

■  Chemistry (of a compound) in which a particular element or group is present in a ratio of 3:2 compared with another
【化】表示（化合物）“两元素为三比二的”, “一倍半化合的”：

sesquioxide.

词源
from Latin semi- （see SEMI-）+que 'and'.
sesqui-|ˈsɛskwɪ|a Latin prefix [L. sesqui-, also sesque-, contraction of *sēmis-que a half in addition; cf. sestertius:—*sēmis-tertius], expressing a superparticular ratio.1. a. With designations of measure or amount, denoting one-and-a-half times the unit; as sesquihōra an hour and a half; sesquipēs a foot and a half (see sesquipedalian); so † sesquiˈhoral a., lasting an hour and a half; ˌsesquioˈcellus Ent. (see sesquialterous); † ˈsesquitone Mus., an interval consisting of a tone and a semitone, a minor third; also used loosely in † sesquiˈdecuman a., consisting of fifteen; † sesquiˈdecury, a set of fifteen.1650Descr. Future Hist. Eur. 31 Merlin prophesied to him, ‘That within lesse then a *sesquidecumane period of time, the Eagles head should be cloven in two.’1650Ravis (title) A generall Grammer for the ready attaining of the Ebrew... Also a *Sesquidecury, or a number of Fifteene Adoptive Epistles..concerning care of the Orientall Tongues to be promoted.1652Urquhart Jewel Wks. (1834) 279 Their tedious pharisaical prayers before supper, and *sesquihoral graces upon a dish of skink and leg of mutton.1694W. Holder Harmony 80 The Third Minor, Trihemitone, or *Sesquitone, as consisting of three half Tones (or rather of a Tone and half a Tone).b. Chem. In the names of salts, expressing a proportion of 3 to 2 between the constituents, viz. a combination of 3 atoms or equivalents of the substance denoted by the word to which it is prefixed with 2 atoms of another element or radical; e.g. sesquibromide, a bromide containing 3 atoms of bromine for 2 of another substance; similarly sesquiˈbasic [see basic a.], having 3 equivalents of the base for 2 of the acid; ˈsesquiˌcompound, ˈsesquiˌsalt, a compound, a salt having its constituents in these proportions; sesquiˈterpene, -ˈterpenoid, any terpene having the formula C15H24; any simple derivative of such a compound.This terminology was introduced into English by T. Thomson in his First Principles of Chemistry 1825, and System of Chemistry 1831, where many terms, not illustrated here, are to be found.1849D. Campbell Inorg. Chem. 208 The *Sesquibasic acetate of lead, 3PbO,2(C4H3O) + Aq.1831T. Thomson Syst. Chem. (ed. 7) II. 388 *Sesquiborate of ammonia.Ibid. I. 324 The *sesquibromide of arsenic.1825― 1st Princ. Chem. II. App. 515 *Sesquicarbonate of ammonia.1883T. F. Hardwich Photogr. Chem. (ed. 9) 38 When first formed it has nearly the composition of a Sesquicarbonate, but by exposure to the air neutral Carbonate of Ammonia escapes, and a white powder is left, which is a Bicarbonate.1871Jrnl. Chem. Soc. XXIV. 1012 *Sesquicarbonyl Chloroplatinite, C3O3Pt2Cl4.1825T. Thomson 1st Princ. Chem. II. App. 515 *Sesquichloride of iron.1857Miller Elem. Chem., Org. (1862) 218 Aluminum forms a *sesqui-compound (Al2(C4H5)3) corresponding to its oxide Al2O3.1839Penny Cycl. XIII. 32/2 The ferrocyanide of potassium also gives a deep blue, but the *sesquiferrocyanide gives none at all.1831T. Thomson Syst. Chem. (ed. 7) II. 452 *Sesquihydrated carbonate of soda.1887Jrnl. Chem. Soc. LII. i. 558 The formula of the fibrous alum, 3MgO,SO3 + 2Al2O3,3SO3 + 53H2O, represents a *sesqui-magnesia alum.1849D. Campbell Inorg. Chem. 186 *Sesquinitrate of iron, Fe2O33NO5.1839Penny Cycl. XIII. 32/1 Sulphate of Peroxide of Iron, or *Sesquipersulphate of Iron.Ibid., [Pernitrate of iron] is..a *sesquisalt.1825T. Thomson 1st Princ. Chem. II. App. 515 *Sesquisulphate of uranium.Ibid., *Sesquisulphuret of arsenic.1890Westm. Gaz. 1 Mar. 6/1 It has been found that sesqui-sulphuret of phosphorus..melts only at 142 deg.1838T. Thomson Chem. Org. Bodies 176 *Sesquitartrovinate of copper.1888Jrnl. Chem. Soc. LIV. 377 *Sesquiterpene, C15H24.1922Nature 16 Feb. 226/2 The principal constituents identified are safral, camphor, pinene, sesquiterpenes, eugenol, and alcoholic bodies.1966New Scientist 8 Dec. 576/2 The substance..is derived from farnesol, one of the basic sesquiterpenes, vegetable substances..which imitate the function of the juvenile hormone.1976Nature 5 Aug. 487/2 The essential oils d-bornyl acetate, α- and β-santalol and several plant sesquiterpene hydrocarbons have been shown to induce sexual excitement in male American cockroaches.1951Jrnl. Chem. Soc. 2988 (heading) *Sesquiterpenoids... Evidence for a nine-membered ring in caryophyllene.1976Nature 5 Aug. 488/2 Cadinol, a sesquiterpenoid biogenetically related to germacrene D, has been isolated from a plant and shown to be a stimulant for both male and female cockroaches.c. In Astrol., sesquiquadrate, -quartile, denoting an aspect of planets when 135° from one another; sesquiquintile, when 108° from one another; sesqui-square = sesquiquadrate.c1610Sir C. Heydon Astrol. Disc. (1650) 95 The *Sesquiquadrate [aspect] of 135 degr.1647Lilly Chr. Astrol. c. 512.1674S. Jeake Arith. (1696) 11 Aspects..*Sesquiquartil.1647Lilly Chr. Astrol. c. 512 *Sesquiquintil [consists of degrees] 108.1861‘Zadkiel’ Hand-bk. Astrol. I. 8 The new aspects are semi-square, 45°; quintile, 72°; *sesqui-square, 135°.†d. Prefixed to words descriptive of forms of religious belief, = extreme(ly), excessive(ly), ultra-; e.g. sesqui-conformist, sesqui-deist, sesqui-heretic, sesqui-Jesuit, sesqui-separation; also sesqui-superlative adj. Obs.a1661Fuller Worthies, Glouc. (1662) i. 360 Some pressed super-Canonical Ceremonies, and such *Sesqui-Conformists made Mr. Workman turn first but a Semi-Conformist, and then by degrees to renounce all Conformity.1880F. Hall Doctor Indoctus 52 If he invented a brand-new form of allotheism, and came out a *sesquideist, or a quaternitarian.1627Donne Serm. i. (1649) II. 5 They are *se[s]qui-Heretiks in this, that they countenance Incontinency, and Fornication, which those very heretiks abhorred.a1631― Serm. xii. (1640) 113 A Jesuit, or a Semi-Jesuit, a practising Papist, or a *Sesqui-Jesuit, a Jesuited Lady.1653R. Baillie Dissuas. Vind. (1655) 9 Why..do the Independents..runne beyond it..to a *sesqui-separation?1611Donne Poems, Upon Coryat's Crudities 2 Oh, to what height will love of greatness drive Thy learned spirit, *sesqui-superlative!2. a. With an ordinal numeral adjective, denoting the proportion 1 + 1 / n :1, i.e. n + 1:n, where n is the corresponding cardinal number, as sesquioctāvus, bearing the ratio 11/8:1, i.e. 9:8; so sesquialter, -altera, etc., sesquitertia, etc.; † ˌsesquibiˈtertial, involving a proportion of 5:3; † ˌsesquiˈdecimal, of 11:10; sesquiˈnonal, of 10:9; ˌsesquiocˈtaval, -ˈoctave, of 9:8; ˌsesquiˈquartal, -quartan, of 5:4; ˌsesquiˈseptimal, of 8:7.a1696Scarburgh Euclid (1705) 228 Sextuple proportion is by addition of the Antecedents made of Sesquitertial, *Sesquibitertial, and Triple proportions.Ibid. 180 If above the exact Multiple of the Consequent, there remains in the Antecedent any Quotal part of the Consequent, as an half, a third, a fourth, or a tenth part of the Consequent, (or otherwise thus named, a Sesquialteral, a Sesquitertial, a Sesquiquartal, a *Sesquidecimal part, &c.).1787Hawkins Life of Johnson 375 The proportion of a column is taken from that of the human figure, which..is in a man sesquioctave of the head, and in a woman *sesquinonal.a1696Scarburgh Euclid (1705) 182 The Exponent of their proportions is the common Quotient 11/8, which shews the proportion to be..*Sesquioctaval.1603Holland Plutarch's Mor. Explan. Words, *Sesqui-octave, that which compriseth the whole and one 8 part; as 9 to 8. 18 to 16.1726Leoni Alberti's Archit. II. 30/2 Its proportion will be as eight to nine, which the Latins call a Sesquioctave.a1696Scarburgh Euclid (1705) 180 This proportion is named triple *Sesquiquartal, and is noted thus 31/4.1715tr. Gregory's Astron. (1726) I. p. xi, The same Tension upon a sub⁓sesquialteran Chord acts in a double *sesquiquartan Ratio.1726Leoni Alberti's Archit. II. 30/2 Seven to eight,..the proportion which the Latins call *Sesquiseptimal.b. in Music, after sesquialtera and sesquitertia; sesquiquarta, -quinta, -sexta, -octava (-octave), -nona, applied (i) to harmonic intervals producible by sounding four-fifths, five-sixths, etc. of a given string; (ii) rhythmic combinations of four notes against five, five against six, etc.1597Morley Introd. Mus. 54 If they would make fiue crotchets to one semibreefe, then must they set downe Sesquiquarta proportion thus 4/5, wherein fiue semibriefes or their value make vp the time of foure semibriefes or strokes.1694W. Holder Harmony 153 To divide a Sesquioctave Tone (9 to 8) by dupling the Terms of the Ration thereof, into 2 Hemitones.1698Wallis in Phil. Trans. XX. 81 We assign to a Fifth..the Sesqui-alter Proportion..And to a Tone..The Sesqui-octave (or that of 9 to 8).1776Hawkins Hist. Mus. I. 74 The ditone he had demonstrated to be in sesquiquarta proportion, as 5 to 4.Ibid. 75 The greater or sesquioctave tone, 9 to 8, and the lesser or sesquinonal tone, 10 to 9.Ibid. The semiditone is sesquiquinta.1883Rockstro in Grove's Dict. Mus. III. 475/1.
sesqui-
word-forming element, from Latin sesqui- "one-half more," contraction of *semis-que- "a half in addition," from semis "a half" (see semi-) + -que "and," from PIE *kwe-.
sesqui- /ˈsɛskwi/ prefix.
ORIGIN: Latin, formed as semi- + -que and.
Used in words adopted from Latin and in English words modelled on these in senses (a) designating, denoting, or involving a ratio of an integer to the next lower integer, as sesquialtera, sesquitertia, sesquiquarta (5:4 or 114:1), sesquioctave (9:8 or 118:1), etc., or occas. a similar integral ratio (no longer productive); (b) designating, denoting, or involving multiplication by one and a half, as sesquicentenary etc.; (c) Chemistry denoting combination in a compound of three equivalents of a named radical or element to two others, as sesquioxide etc.
sesqui-
combining form
Etymology: Latin, one and a half, half again, literally, and a half, from semis half (from semi-) + -que and (enclitic); akin to Greek te and, Sanskrit ca, Gothic -h, -uh — more at semi-
1. : one and a half times
 < sesquicentennial >
2. archaic : more than the norm of the type : super-, ultra-
 < sesquiheretic >
3. : one and a half times the degree of a (specified) aspect in astrology
 < sesquiquadrate >
4.
 a. : containing three atoms or equivalents of a (specified) element or radical especially when combined with two of another
  < sesquioxide >
  < sesquisulfide >
 b. : intermediate : combination — not used systematically
  < sesquicarbonate >
  < sesquisilicate >
 c. : containing half again as many atoms
  < sesquiterpene >

sesqui-

Prefix

  1. One and a half
  2. In a ratio of 3 to 2

Etymology

From Latin sēsqui

Derived terms

  • Category:English words prefixed with sesqui-
  • sesquicentennial, sesquicentenary, sesquicentenarian
  • sesquilinear
  • sesquioxide
  • sesquipedal, sesquipedalian, sesquipedalianism
  • sesquiplane
  • sesquiplicate
  • sesquisyllabic
  • sesquiterpene

    • 词根词缀：sesqui-

    【来源及含义】Latin: one and a half; normally used as a prefix; from Latin, semis “half” + que “and”

    【相关描述】In chemistry, three atoms or equivalents of the [specified] element or radical are combined with two of another, as in iron sesquioxide, Fe 2O3. Also defined as the proportion of two (of one radical or element) to three (of another).

    【同源单词】hippopotomonstrosesquipedalian, hippopotomonstrosesquipedalianism, hippopotomonstrosesquipedalianist, hippopotomonstrosesquippedaliophobia, hyperpolysyllabicsesquipedalianist, sesquialteral
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