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Define the word Xerophthalmia

"Xerophthalmia" gcide "The Collaborative International Dictionary of English v.0.48"

Xerophthalmia \Xe`roph*thal"mi*a\, n. [L., fr. Gr. ?; xhro`s dry
   + ? the eye. See Ophthalmia.] (Med.)
   An abnormal dryness of the eyeball produced usually by
   long-continued inflammation and subsequent atrophy of the
   conjunctiva.
   [1913 Webster]

"xerophthalmia" wn "WordNet (r) 2.0"

xerophthalmia
     n : abnormal dryness of the conjunctiva and cornea of the eyes;
         may be due to a systemic deficiency of vitamin A [syn: xerophthalmus,
          xeroma, conjunctivitis arida]