or chiefly Brit  pan*leu*co*pe*nia  n :  an acute usu. fatal viral epizootic disease esp. of cats that is caused by a parvovirus and is characterized by fever, diarrhea and dehydration, and extensive destruction of white blood cells - called also cat distemper , cat fever , cat plague , cat typhoid , feline distemper , feline enteritis , feline panleukopenia  .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2004.