Source : Webster's Revised Unabridged Dictionary (1913)

Laryngitis \Lar`yn*gi"tis\, n. [NL. See {Larynx}, and {-tis}.]
   (Med.)
   Inflammation of the larynx.

Source : WordNet®

laryngitis
     n : inflammation of the mucous membrane of the larynx;
         characterized by hoarseness or loss of voice and coughing