Main Entry: cor·nea

Pronunciation: \ˈkȯr-nē-ə\

Function: noun

Etymology: Middle English, from Medieval Latin, from Latin, feminine of corneus horny, from cornu

Date: 14th century

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

— cor·ne·al \-əl\ adjective