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.
Corneal nerves are located in the cornea, the transparent part of the front of your eye. Sarah Hudgens, Health, 17 May 2025 Hard to be when some individuals have parasites attaches to their corneas! Melissa Cristina Márquez, Forbes.com, 14 May 2025 Before the advent of LASIK, surgeons used a scalpel to cut into the cornea. Jerome Barthelemy, Harvard Business Review, 13 May 2025 Contact lenses containing a hydrogel that allows more oxygen to reach the cornea can also help to stave off damage from UV, Rodrigo Comino says. Sanket Jain, Smithsonian Magazine, 16 May 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

Browse Nearby Words

Cite this Entry

“Cornea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cornea. Accessed 1 Jun. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!