medio-|ˈmiːdɪəʊ|used as combining form of L. medius middle:1. In Zool. and Bot. in various adjs. descriptive of parts and organs of animals and plants, with the sense either ‘relating to the middle of’ (an organ or part), as in medio-carpal, medio-colic, medio-digital, medio-dorsal (hence medio-dorsally adv.), medio-frontal (also absol. = ‘medio-frontal suture’), medio-lateral (hence medio-laterally adv.), medio-occipital, medio-palatine (also absol. = ‘medio-palatine bone’), medio-pontine, medio-stapedial (absol. in quots.), medio-tarsal, medio-ventral; or ‘in the middle’, as in medio-depressed, medio-perforate; also in medio-inferior, -posterior = ‘lower middle’, ‘posterior-middle’ (margin).1890Syd. Soc. Lex., *Medio-carpal, relating to the middle of the carpus.1871W. A. Leighton Lichen-Flora 78 Subpeltate, *medio-depressed, margin white crenulate [etc.].1852Dana Crust. i. 625 Species with a *medio-dorsal spine.1882Vines Sachs' Bot. 449 The first leaf is the scutiform leaf..which is placed *medio-dorsally.1865Thurnam in Nat. Hist. Rev. Apr. 246 The almost infallible closure of the *medio-frontal.1849Dana Geol. App. i. (1850) 698 [The] straight *medio-inferior margin, parallel with the dorsal.1854Owen Skel. & Teeth in Circ. Sci., Org. Nat. I. 214 The *medio-lateral pieces as..developments of the ribs.1971Nature 20 Aug. 542/2 The nucleus is crescent shaped in cross section and extends 1·4 mm rostrocaudally and *mediolaterally.1890Syd. Soc. Lex., *Medio-occipital, relating to the middle of the occipital region.1884Coues Key N. Amer. Birds (ed. 2) 173 The most marked *medio-palatine ossification... Such are..formations which, like the medio-palatine, serve to bind the palate halves together.1879W. A. Leighton Lichen-Flora (ed. 3) 516 *Medio-perforate, perforated in the centre.1890Syd. Soc. Lex., *Medio-pontine, relating to the middle of the pons varolii.1852Dana Crust. i. 625 *Medio-posterior spine small, very remote from posterior margin.1875W. K. Parker in Encycl. Brit. III. 702/2 The bar itself is the ‘*medio-stapedial’..; it will soon segment itself off from the ear-capsule.1890Syd. Soc. Lex., Medio-stapedial, the middle third of the columella of the ear in the frog.1884Coues Key N. Amer. Birds (ed. 2) 121 note, A bird's ankle-joint is..between proximal and distal series of tarsal bones, and therefore *medio-tarsal as in reptiles.1870Rolleston Anim. Life Introd. 40 Reflected upwards from the *medio-ventral line.2. In Philol., as medio-palatal a., articulated with the tongue against the middle part of the hard palate; medio-passive a., of the voice of a verb, intermediate between active and passive (cf. middle a. 4 a); also as n.; hence medio-passivization.1902E. W. Scripture Elem. Exper. Phonetics xvii. 297 Roof articulations are indicated by the names..pre-, medio-, postpalatal.1942Bloch & Trager Outl. Ling. Analysis 15 Different points of articulation are designated by the terms prepalatal, mediopalatal, and postpalatal, indicating that the front [of the tongue] touches or approaches respectively the anterior, the middle, or the posterior part of the hard palate.1949R.-M. S. Heffner Gen. Phonetics vi. 148 In Midwest American pronunciations of English there is an open r sound, which is formed by raising the middle region of the dorsum of the tongue towards the mediopalatal junction between the hard palate and velum.1962Chavarria-Aguila & Penzl in Householder & Saporta Probl. Lexicogr. iv. 241 A contrasting pair of voiced and voiceless medio-palatal fricatives occur.1921E. Sapir Lang. iv. 74 Of the seven suffixes..-o(ht) -indicates activity done for the subject (the so-called ‘middle’ or ‘medio-passive’ voice of Greek).1933E. H. Sturtevant Compar. Gram. Hittite Lang. vi. 250 Hittite has a medio-passive, which has the same uses as the Gk. middle voice. It most frequently represents the subject as acting upon or in respect of himself.1934Priebsch & Collinson German Lang. ii. vi. 296 Germanic retained in Gothic an inflected medio-passive present from Indo-European.1952O. R. Gurney Hittites vi. 118 The verb has two voices—active and medio⁓passive.1968Encycl. Brit. XI. 558/1 Besides the active there survives a medio-passive voice [in Hittite] characterized in the present by a somewhat loose -r(i) attached to the old middle endings.1972Language XLVIII. 393 A reflexive—hence, by ergative criteria, mediopassive—form of the verb.Ibid. 395 In keeping with the ergative focus, the object (non-ergator) is retained formally in an intransitive, mediopassive form, there being no external agent of the action described.1973A. H. Sommerstein Sound Pattern Anc. Greek ii. 13 The infinitive ending in all medio-passive senses is /-sthay/.1975Language LI. 97 Ambiguity between reflexive and medio-passive constructions is possible (e.g. ‘I got out’ vs. ‘I cut myself’); but in practice this is not much of a problem, since many verbs do not undergo medio-passivization.

medio-

word-forming element from comb. form of Latin medius "middle" (see medial, adj.).

medio- /ˈmi:dɪəʊ/ combining form. M19.

ORIGIN: from Latin medius mid adjective + -o-.

Of or relating to the middle (of an organ or part), as mediodorsal, medio-occipital, mediopassive.

medio-
— see medi-

medio-

Prefix

middle

词汇	medio-
词根词缀	OED Online Etymology Dictionary SOED Webster Wiktionary medio-\|ˈmiːdɪəʊ\|used as combining form of L. medius middle:1. In Zool. and Bot. in various adjs. descriptive of parts and organs of animals and plants, with the sense either ‘relating to the middle of’ (an organ or part), as in *medio-carpal, medio-colic, medio-digital, medio-dorsal* (hence *medio-dorsally* adv.), *medio-frontal* (also absol. = ‘medio-frontal suture’), *medio-lateral* (hence *medio-laterally* adv.), *medio-occipital, medio-palatine* (also absol. = ‘medio-palatine bone’), *medio-pontine, medio-stapedial* (absol. in quots.), *medio-tarsal, medio-ventral; or ‘in the middle’, as in medio-depressed, medio-perforate; also in medio-inferior, -posterior* = ‘lower middle’, ‘posterior-middle’ (margin).1890Syd. Soc. Lex., Medio-carpal, relating to the middle of the carpus.1871W. A. Leighton Lichen-Flora* 78 Subpeltate, medio-depressed, margin white crenulate [etc.].1852Dana Crust.* i. 625 Species with a medio-dorsal spine.1882Vines Sachs' Bot.* 449 The first leaf is the scutiform leaf..which is placed medio-dorsally.1865Thurnam in Nat. Hist. Rev.* Apr. 246 The almost infallible closure of the medio-frontal.1849Dana Geol.* App. i. (1850) 698 [The] straight medio-inferior margin, parallel with the dorsal.1854Owen Skel. & Teeth* in Circ. Sci., Org. Nat. I. 214 The medio-lateral pieces as..developments of the ribs.1971Nature 20 Aug. 542/2 The nucleus is crescent shaped in cross section and extends 1·4 mm rostrocaudally and mediolaterally.1890Syd. Soc. Lex., Medio-occipital, relating to the middle of the occipital region.1884Coues Key N. Amer. Birds* (ed. 2) 173 The most marked medio-palatine ossification... Such are..formations which, like the medio-palatine, serve to bind the palate halves together.1879W. A. Leighton Lichen-Flora* (ed. 3) 516 Medio-perforate, perforated in the centre.1890Syd. Soc. Lex., Medio-pontine, relating to the middle of the pons varolii.1852Dana Crust. i. 625 Medio-posterior spine small, very remote from posterior margin.1875W. K. Parker in Encycl. Brit.* III. 702/2 The bar itself is the ‘medio-stapedial’..; it will soon segment itself off from the ear-capsule.1890Syd. Soc. Lex., Medio-stapedial, the middle third of the columella of the ear in the frog.1884Coues Key N. Amer. Birds* (ed. 2) 121 note, A bird's ankle-joint is..between proximal and distal series of tarsal bones, and therefore medio-tarsal as in reptiles.1870Rolleston Anim. Life* Introd. 40 Reflected upwards from the medio-ventral line.2. In Philol., as medio-palatal* a., articulated with the tongue against the middle part of the hard palate; medio-passive a., of the voice of a verb, intermediate between active and passive (cf. middle a. 4 a); also as n.; hence *medio-passivization.1902E. W. Scripture Elem. Exper. Phonetics* xvii. 297 Roof articulations are indicated by the names..pre-, medio-, postpalatal.1942Bloch & Trager Outl. Ling. Analysis 15 Different points of articulation are designated by the terms prepalatal, mediopalatal, and postpalatal, indicating that the front [of the tongue] touches or approaches respectively the anterior, the middle, or the posterior part of the hard palate.1949R.-M. S. Heffner Gen. Phonetics vi. 148 In Midwest American pronunciations of English there is an open r sound, which is formed by raising the middle region of the dorsum of the tongue towards the mediopalatal junction between the hard palate and velum.1962Chavarria-Aguila & Penzl in Householder & Saporta Probl. Lexicogr. iv. 241 A contrasting pair of voiced and voiceless medio-palatal fricatives occur.1921E. Sapir Lang. iv. 74 Of the seven suffixes..-o(ht) -indicates activity done for the subject (the so-called ‘middle’ or ‘medio-passive’ voice of Greek).1933E. H. Sturtevant Compar. Gram. Hittite Lang. vi. 250 Hittite has a medio-passive, which has the same uses as the Gk. middle voice. It most frequently represents the subject as acting upon or in respect of himself.1934Priebsch & Collinson German Lang. ii. vi. 296 Germanic retained in Gothic an inflected medio-passive present from Indo-European.1952O. R. Gurney Hittites vi. 118 The verb has two voices—active and medio⁓passive.1968Encycl. Brit. XI. 558/1 Besides the active there survives a medio-passive voice [in Hittite] characterized in the present by a somewhat loose -r(i) attached to the old middle endings.1972Language XLVIII. 393 A reflexive—hence, by ergative criteria, mediopassive—form of the verb.Ibid. 395 In keeping with the ergative focus, the object (non-ergator) is retained formally in an intransitive, mediopassive form, there being no external agent of the action described.1973A. H. Sommerstein Sound Pattern Anc. Greek ii. 13 The infinitive ending in all medio-passive senses is /-sthay/.1975Language LI. 97 Ambiguity between reflexive and medio-passive constructions is possible (e.g. ‘I got out’ vs. ‘I cut myself’); but in practice this is not much of a problem, since many verbs do not undergo medio-passivization. medio- word-forming element from comb. form of Latin medius "middle" (see medial, adj.). medio- /ˈmi:dɪəʊ/ combining form. M19. ORIGIN: from Latin medius mid adjective + -o-. Of or relating to the middle (of an organ or part), as mediodorsal, medio-occipital, mediopassive. medio- — see medi- medio- Prefix middle
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