Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

cornea

play
noun cor·nea \ˈkȯr-nē-ə\

Simple Definition of cornea

  • : the clear outer covering of the eyeball

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cornea

  1. :  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 play \-əl\ adjective

Origin of cornea

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


First Known Use: 14th century


CORNEA Defined for Kids

cornea

play
noun cor·nea \ˈkȯr-nē-ə\

Definition of cornea for Students

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




Medical Dictionary

cornea

play
noun cor·nea \ˈkȯr-nē-ə\

Medical Definition of cornea

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

corneal \-əl\play adjective


Illustration of cornea



Seen and Heard

What made you want to look up cornea? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the range of perception or understanding

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove perplex soothe reduce
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ