A B C D E F G H I K L M N O P R S T U V W X Keratitis Definition: Inflammation of the cornea. Broader term(s) Eye Diseases Corneal Diseases Keratitis See also Acanthamoeba Keratitis Corneal Ulcer Keratitis, Herpetic Keratoconjunctivitis MeSH © U.S. National Library of Medicine®.