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cornea

noun
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cor·​nea | \ ˈkȯr-nē-ə How to pronounce cornea (audio) \

Definition of cornea

: the transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior — see eye illustration
Other Words from cornea Example Sentences Learn More about cornea

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Other Words from cornea

corneal \ ˈkȯr-​nē-​əl How to pronounce corneal (audio) \ adjective

Examples of cornea in a Sentence

Recent Examples on the Web Glatter said significant damage to the corneal epithelium, the outermost layer of the cornea, could lead to visual impairment. — USA Today, "Going to protest George Floyd's death? Here's how to protect yourself against tear gas, pepper spray," 2 June 2020 The Columbia researchers have been palpating the skin of the mice and looking for lesions on their corneas. — Michael Laris, Anchorage Daily News, "Scientists think they know ways to combat viruses on airplanes. They’re too late for this pandemic.," 2 May 2020 It is commonly prescribed for those with irregular corneas or dry eyes. — Edward C. Baig, USA TODAY, "'Eye' to the future: These are the smart augmented contact lenses you may wear someday," 16 Jan. 2020 Even having a deficiency in vitamin A, a nutrient that is essential for the health of your conjunctiva and cornea, can decrease your tear production, the Mayo Clinic explains. — Korin Miller, SELF, "This Is Why Your Eyes Get So Damn Dry—and How to Fix It," 14 Aug. 2018 The light that comes in via the cornea and through the lens winds up at this tissue in the back. — Meryl Davids Landau, Good Housekeeping, "How to Maintain Good Eye Health, According to Doctors," 13 Mar. 2020 Skin is much easier to obtain than a heart or cornea. — Roni Caryn Rabin, New York Times, "New Zealand Seeks Human Skin to Treat Volcano Burn Victims," 12 Dec. 2019 Aside from the setback with her new face, the synthetic cornea transplanted in her left eye failed, leaving her almost completely blind. — BostonGlobe.com, "six years after her transplant," 21 Sep. 2019 Cuttlefish have camera-type eyes, which have a cornea, lens, iris and retina. — Ryan Prior, CNN, "Scientists put 3D glasses on cuttlefish and showed them film clips. The results were surprising," 9 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cornea.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of cornea

14th century, in the meaning defined above

History and Etymology for cornea

Middle English, borrowed from Medieval Latin (short for cornea tēla "horny web," cornea tunica "horny covering," translating Greek kerātoeidḕs chitṓn), from feminine of Latin corneus "horny" — more at corneous

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Time Traveler for cornea

Time Traveler

The first known use of cornea was in the 14th century

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Statistics for cornea

Last Updated

20 Jun 2020

Cite this Entry

“Cornea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cornea. Accessed 15 Aug. 2020.

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More Definitions for cornea

cornea

noun
How to pronounce cornea (audio)

English Language Learners Definition of cornea

technical : the clear outer covering of the eyeball

See the full definition for cornea in the English Language Learners Dictionary

cornea

noun
cor·​nea | \ ˈkȯr-nē-ə How to pronounce cornea (audio) \

Kids Definition of cornea

: the transparent outer layer of the front of the eye covering the pupil and iris

cornea

noun
cor·​nea | \ ˈkȯr-nē-ə How to pronounce cornea (audio) \

Medical Definition of cornea

: the transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior

Other Words from cornea

corneal \ -​əl How to pronounce corneal (audio) \ adjective

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More from Merriam-Webster on cornea

Spanish Central: Translation of cornea

Nglish: Translation of cornea for Spanish Speakers

Britannica English: Translation of cornea for Arabic Speakers

Britannica.com: Encyclopedia article about cornea

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