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[sit-uh-koh-sis] /ˌsɪt əˈkoʊ sɪs/
noun, Pathology
a rickettsial disease affecting birds of the parrot family, pigeons, and domestic fowl, caused by the chlamydia Chlamydia psittaci and transmissible to humans.
Also called ornithosis, parrot fever.
1895-1900; < Latin psittac(us) parrot (< Greek psittakós) + -osis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for psittacosis
  • psittacosis can be treated with a common antibiotic.
British Dictionary definitions for psittacosis


a disease of parrots, caused by the obligate intracellular parasite Chlamydia psittaci, that can be transmitted to man, in whom it produces inflammation of the lungs and pneumonia Also called parrot fever, ornithosis
Word Origin
C19: from New Latin, from Latin psittacus a parrot, from Greek psittakos; see -osis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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psittacosis in Medicine

psittacosis psit·ta·co·sis (sĭt'ə-kō'sĭs)
An infectious disease of parrots and related birds caused by the bacterium Chlamydia psittaci, that is communicable to humans, in whom it produces high fever, severe headache, and symptoms similar to pneumonia. Also called parrot fever.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for psittacosis

parrot fever

infectious disease of worldwide distribution caused by a bacterial parasite (Chlamydia psittaci) and transmitted to humans from various birds. The infection has been found in about 70 different species of birds; parrots and parakeets (Psittacidae, from which the disease is named), pigeons, turkeys, ducks, and geese are the principal sources of human infection.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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