n 1  cap  :  a genus of tapeworms of the family Taeniidae that alternate a minute adult living as a harmless commensal in the intestine of dogs and other carnivores with a hydatid larva invading tissues esp. of the liver of cattle, sheep, swine, and humans, and acting as a serious often fatal pathogen  2  pl  -coc*ci   :  any tapeworm of the genus Echinococcus : also  :  HYDATID 1 .
 
 
 
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