cornea

noun

cor·​nea ˈkȯr-nē-ə 

: 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

ˈkȯr-nē-əl 

adjective

Examples of cornea in a Sentence

Recent Examples on the Web

The scar tissue left behind by the accident eliminated the possibility for a cornea transplant. —Brian Murphy, Washington Post, 16 July 2024

These procedures use lasers to reshape the cornea to correct refractive errors and reduce or eliminate the need for glasses or contact lenses.52 Both Can Affect Quality of Life Both nearsightedness and farsightedness can affect daily activities and lead to practical challenges. —Lindsay Curtis, Health, 18 Aug. 2024

The fundamental science behind crafting a cornea had long been known. —Brian Murphy, Washington Post, 16 July 2024

When the 4-year-old English bulldog tried, his misshapen eyelids would roll inward, causing his eyelashes to scrape against his cornea. —Sandee Lamotte, CNN, 14 July 2024

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

Kids Definition

cornea

noun

cor·​nea ˈkȯr-nē-ə 

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

corneal

-nē-əl 

adjective

Medical Definition

cornea

noun

cor·​nea ˈkȯr-nē-ə 

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

corneal

-əl 

adjective