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Medical Definition of Dipylidium caninum
1. The commonest species of dog tapeworm, the double-pored tapeworm, the larvae of which are harbored by dog fleas or lice; the worm occasionally infects humans, especially children licked by dogs that have recently nipped infected fleas. Origin: G. Dipylos, with two entrances; L. Ntr. Of caninus, pertaining to canis, dog (05 Mar 2000)