cornea

noun

cor·​nea ˈkȯr-nē-ə How to pronounce cornea (audio)
: the transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior see eye illustration
corneal adjective

Examples of cornea in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For anyone who’s been lucky enough not to experience it, snow blindness—technically called ultraviolet (UV) keratitis—happens when your corneas are exposed to too much ultraviolet light, which reflects off snow. Kristin Canning, SELF, 6 Feb. 2025 Keratoconus: Anyone diagnosed with keratoconus, in which the normally round cornea bulges forward in the shape of a cone, will not be able to undergo LASIK, as this will further weaken the already unstable tissue. Maxine Lipner, Verywell Health, 23 Oct. 2024 It is also found in bones, cartilage, and teeth and even fills out the cornea, which is present in the crystalline form.4 Many healthcare professionals use collagen to treat wounds, close grafts, heal tooth extraction sites, and improve recovery. Sherri Gordon, Health, 8 Jan. 2025 Her organs, including her kidneys, liver and corneas, were donated, according to a statement issued by Chania General Hospital. Matt Hamilton, Los Angeles Times, 4 Jan. 2025 See all Example Sentences for cornea 

Word History

Etymology

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

First Known Use

14th century, in the meaning defined above

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

Dictionary Entries Near cornea

Cite this Entry

“Cornea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cornea. Accessed 16 Feb. 2025.

Kids Definition

cornea

noun
cor·​nea ˈkȯr-nē-ə How to pronounce cornea (audio)
: the transparent part of the coat of the eyeball that covers the iris and pupil and lets light through to the interior
corneal adjective

Medical Definition

cornea

noun
cor·​nea ˈkȯr-nē-ə How to pronounce cornea (audio)
: the transparent part of the coat of the eyeball that covers the iris and pupil and admits light to the interior
corneal adjective

More from Merriam-Webster on cornea

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