- variant of cerato-: keratogenous.
combining form
- indicating horn or a horny substancekeratin; keratogenous
- indicating the corneakeratoplasty
before vowels, kerat-, word-forming element meaning “horn, horny,” from Greek keras (genitive keratos) “horn,” from PIE *ker- (1) “horn, head” (see horn (n.)).
pref.
- Horn; horny:keratosis.
- Cornea:keratectomy.