Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The transparent convex anterior portion of the outer fibrous coat of the eyeball that covers the iris and the pupil and is continuous with the sclera.
Century Dictionary and Cyclopedia
- n. The firm, transparent anterior portion of the eyeball. It is of circular outline, concavo-convex, with the convexity forward, bounding the anterior chamber of the eye in front, by its margin continuous with the sclerotic, and having its outer surface, as a rule, covered with a delicate layer of the conjunctiva. In the human eye it forms about one sixth of the entire eyeball. Its convexity is greater than that of the sclerotic, forming a comparatively larger portion of a smaller sphere than the sclerotic. The cornea is so called from its hardness, being likened to horn; it is also known as the tunicacornea pellucida or pellucid horn coat of the eye, in distinction from the sclerotic. See cut under
eye . - n. In entomology, the outer surface of an insect's compound eye. It is generally smooth, but may be hairy. The word is also used to designate the outer transparent lens of each facet of a compound eye, and the surface of an ocellus or simple eye. See
cornea-lens .
Wiktionary
- n. anatomy The transparent layer making up the outermost front part of the eye, covering the iris, pupil, and anterior chamber.
GNU Webster's 1913
- n. (Anat.) The transparent part of the coat of the eyeball which covers the iris and pupil and admits light to the interior. See eye.
WordNet 3.0
- n. the transparent dome-shaped anterior portion of the outer covering of the eye; it covers the iris and pupil and is continuous with the sclera
Etymologies
- From Latin cornea tela ("horny tissue"), from cornu ("horn") (Wiktionary)
- Medieval Latin cornea (tēla), horny (tissue), from Latin corneus, horny, from cornū, horn; see ker-1 in Indo-European roots. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“The cornea is a clear, jelly-like membrane covering the eye.”
“Well, my right cornea is still mostly opaque, but I did write 1359 words today despite being half-blind.”
outside the domain of your effective powers i had a little plastic life
“Macrida Patterson, a 52-year-old Los Angeles traffic officer, told NBC's "Today" show that she suffered cuts to her cornea from the small piece of metal that had been used to secure a rhinestone heart onto the blue thong.”
“An artificial cornea is in sight, thanks to biomimetic hydrogels”
“The birds seem to use these as sunshades, deliberately positioning the head so that the cornea is shaded from bright light when appropriate (Martin & Coetzee 2004).”
“The rabbit cornea is able to regenerate on the underside, whereas the human cornea can only regenerate on the surface.”
“The team’s artificial cornea is made from tiny collagen fibres extracted from these sea cucumbers.”
“: A laser is used to cut a flap in the cornea, which is then repositioned to improve sight.”
The Wall Street Journal: Researchers Beaming at Light's Medical Uses
“This means that over the long term the cornea could lose its transparency.”
“Pus behind the cornea is a sign of severe inflammation.”
Lists
These user-created lists contain the word ‘cornea’.
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Interesting words
A list of words that are odd or words that I have looked up.
concupiscence, brize, scree, scoria, forestaff, spanaemia, valetudinarianism, distasture, pyrethrum, laudanum, gentian, bicameral and 11184 more...
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...
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Anatomy of plants and animals
A collection of anatomical names for parts of humans, animals, plants, and whatever anyone else can recall.
anther, stamen, pistil, filament, style, stigma, calyx, petal, sepal, peduncle, carpel, leaf and 22 more...
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The Eyes Have It
parts of the human eye
iris, pupil, sclera, macula, retina, vitreous, conjunctiva, cornea, lens, choroid, optic nerve, ciliary body and 34 more...
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tlitchfo's Words
nougat, endoplasmic retic..., cornea, flatulence, asphyxiate, perambulate, aphasia
Tweets
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