Definition of: psittacosis

(sit′ə·kō′sis) noun
An acute, infectious, wasting disease of parrots and related birds, caused by a filtrable virus: transmitted to man, it causes fever and nausea, with complications resembling influenza and typhoid fever: also called parrot fever. [<NL <Gk. psittakos a parrot + -osis-OSIS]