preocularadj.n.

Brit.

/prɪˈɒkjᵿlə/,

/priːˈɒkjᵿlə/, U.S.

/priˈɑkjələr/

Forms: 1800s praeocular, 1800s– preocular.

Origin: Formed within English, by derivation. Etymons: pre- prefix, -ocular comb. form.

Etymology: < pre- prefix + -ocular comb. form.

A. adj.

1. Zoology. Situated in front of the eye. Opposed to postocular.

ΘΚΠ

the world > life > the body > external parts of body > head > face > eye > [adjective] > situated near

subocular1801

interocular1826

preocular1826

postocular1830

antorbital1837

anteocular1846

periophthalmic1886

1826 W. Kirby & W. Spence Introd. Entomol. IV. xlvi. 316 Preocular... When antennæ are inserted before the eyes.

1852 W. Macgillivray Hist. Brit. Birds V. 522 The preocular bristly feathers blackish.

1934 Amer. Midland Naturalist 15 450 A Bufo with well-developed cranial crests which do not possess conspicuous tympanic or preocular branches.

1993 Snake 25 9 Males have a higher incidence of fusion of the preocular and adjacent supralabial scale.

2. Ophthalmology. Present on the surface of the eye.

ΚΠ

1973 Exper. Eye Res. 15 515 The formation of the preocular tear film successive to each blink is discussed in terms of surface chemical characteristics of the lid-cornea system.

1985 Trans. Ophthalmol. Soc. 104 374 The instability of the preocular tear film, which can be caused by several factors, appears to be characteristic of all dry eye states irrespective of aetiology.

2004 Brit. Jrnl. Ophthalmol. 88 1460/1 The preocular fluid is renewed continuously with molecules, added both from the epithelium it overlays and from the lacrimal gland.

B. n.

Zoology. In a snake or lizard: a scale situated immediately in front of the eye.

ΘΚΠ

the world > animals > reptiles > order Squamata (lizards and snakes) > [noun] > parts of

anteocular1848

zygantrum1854

zygosphene1854

preocular1859

occipital1890

hemipenis1909

1859 E. Hallowell in R. S. Williamson Rep. Explor. Routes Calif. : Zool. Rep. (U. S. War Dept.: Rep. Explor. Route to Pacific) V. i. 15 One preocular, which is quadrangular, resting on the third supralabial.

1942 Amer. Midland Naturalist 27 166 One adult and one juvenile each have two preoculars, on each side of the head.

1993 Copeia iv. 987 Six head scale counts: loreals, supra- and infralabials, pre- and postoculars, temporals.

This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).

单词	preocular
释义	preocularadj.n. Brit. /prɪˈɒkjᵿlə/, /priːˈɒkjᵿlə/, U.S. /priˈɑkjələr/ Forms: 1800s praeocular, 1800s– preocular. Origin: Formed within English, by derivation. Etymons: pre- prefix, -ocular comb. form. Etymology: < pre- prefix + -ocular comb. form. A. adj. 1. Zoology. Situated in front of the eye. Opposed to postocular. ΘΚΠ the world > life > the body > external parts of body > head > face > eye > [adjective] > situated near subocular1801 interocular1826 preocular1826 postocular1830 antorbital1837 anteocular1846 periophthalmic1886 1826 W. Kirby & W. Spence Introd. Entomol. IV. xlvi. 316 Preocular... When antennæ are inserted before the eyes. 1852 W. Macgillivray Hist. Brit. Birds V. 522 The preocular bristly feathers blackish. 1934 Amer. Midland Naturalist 15 450 A Bufo with well-developed cranial crests which do not possess conspicuous tympanic or preocular branches. 1993 Snake 25 9 Males have a higher incidence of fusion of the preocular and adjacent supralabial scale. 2. Ophthalmology. Present on the surface of the eye. ΚΠ 1973 Exper. Eye Res. 15 515 The formation of the preocular tear film successive to each blink is discussed in terms of surface chemical characteristics of the lid-cornea system. 1985 Trans. Ophthalmol. Soc. 104 374 The instability of the preocular tear film, which can be caused by several factors, appears to be characteristic of all dry eye states irrespective of aetiology. 2004 Brit. Jrnl. Ophthalmol. 88 1460/1 The preocular fluid is renewed continuously with molecules, added both from the epithelium it overlays and from the lacrimal gland. B. n. Zoology. In a snake or lizard: a scale situated immediately in front of the eye. ΘΚΠ the world > animals > reptiles > order Squamata (lizards and snakes) > [noun] > parts of anteocular1848 zygantrum1854 zygosphene1854 preocular1859 occipital1890 hemipenis1909 1859 E. Hallowell in R. S. Williamson Rep. Explor. Routes Calif. : Zool. Rep. (U. S. War Dept.: Rep. Explor. Route to Pacific) V. i. 15 One preocular, which is quadrangular, resting on the third supralabial. 1942 Amer. Midland Naturalist 27 166 One adult and one juvenile each have two preoculars, on each side of the head. 1993 Copeia iv. 987 Six head scale counts: loreals, supra- and infralabials, pre- and postoculars, temporals. This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). < adj.n.1826
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