n, pl  -cho*ses   :  infestation with or disease caused by nematode worms of the genus Haemonchus (esp. H. contortus), typically characterized by anemia, digestive disturbances, and emaciation resulting from the bloodsucking habits of the worms .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2009.