ECHINOCOCCI
ECHINOCOCCUS
echinococcus
(noun) tapeworms whose larvae are parasitic in humans and domestic animals
Source: WordNet® 3.1
Noun
echinococci
plural of echinococcus
Source: Wiktionary
ECHINOCOCCUS
E*chi`no*coc"cus, n. Etym: [NL., fr. Gr. (Zoöl.)
Definition: A parasite of man and of many domestic and wild animals,
forming compound cysts or tumors (called hydatid cysts) in various
organs, but especially in the liver and lungs, which often cause
death. It is the larval stage of the Tænia echinococcus, a small
tapeworm peculiar to the dog.
Source: Webster’s Unabridged Dictionary 1913 Edition