Pronunciation: (in"flOO-en'zu), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/influenza.html on line 79 [key]
1. Pathol.an acute, commonly epidemic disease, occurring in several forms, caused by numerous rapidly mutating viral strains and characterized by respiratory symptoms and general prostration. Cf. flu.
2. Vet. Pathol.an acute, contagious disease occurring in horses and swine, characterized by fever, depression, and catarrhal inflammations of the eyes, nasal passages, and bronchi, and caused by a virus.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.