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cornea

[ kawr-nee-uh ]

noun

, Anatomy.
  1. the transparent anterior part of the external coat of the eye covering the iris and the pupil and continuous with the sclera.


cornea

/ ˈkɔːnɪə /

noun

  1. the convex transparent membrane that forms the anterior covering of the eyeball and is continuous with the sclera


cornea

/ kôrnē-ə /

  1. The tough transparent membrane of the outer layer of the eyeball that covers the iris and the pupil.


cornea

  1. The transparent outer covering of the front of the eye that covers the iris and pupil .


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Derived Forms

  • ˈcorneal, adjective
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Other Words From

  • corne·al adjective
  • multi·corne·al adjective
  • pre·corne·al adjective
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Word History and Origins

Origin of cornea1

1350–1400; Middle English < Medieval Latin cornea ( tēla, later tunica ) horny (web or tunic), feminine of corneus corneous
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Word History and Origins

Origin of cornea1

C14: from Medieval Latin cornea tēla horny web, from Latin cornū horn
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Example Sentences

The tear-moistened surface of your eye’s cornea allows oxygen to diffuse directly from the air into your eyeball.

A paper published last week in Nature Biotechnology describes a bioengineered cornea that restored sight to 20 people, 14 of them previously blind, in an initial clinical trial.

This disease thins the cornea, the outermost transparent layer of the eye, and prevents the eye from focusing properly.

These corneas, described in Nature Biotechnology today, could help restore sight to people in countries where human cornea transplants are in short supply, and for a lower price.

Fungal keratitis, an infection of the cornea, strikes more than a million people annually, estimates suggest, and blinds around 600,000.

Blood was pooling beneath her cornea, forming what is known as a hyphema.

What is possibly lovable about the cornea—or the iris or the retina for that matter?

Here is the proof: even as a whippersnapper, young Rand seemed to love the cornea.

It is the cornea—the last redoubt of virility and independence.

Untouched and untouchable, not surprisingly it was the cornea that the future Dr. Paul fell in love with.

Anatomical changes took place in the cornea, as evidenced by a white opacity.

He was distinguished, also, as an oculist and aurist, and removed a particle of iron from the cornea by means of a magnet.

It is no more art to use the cornea and retina for the reception of an image, than to use a lens and a piece of silvered paper.

Make an incision through the upper quadrant of the cornea into the anterior chamber by means of a triangular keratome.

Without removing the needle from the cornea attach the syringe and make the injection into the anterior chamber.

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corn dollycorneal reflex