• WordNet 3.6
    • n echinococcus tapeworms whose larvae are parasitic in humans and domestic animals
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Webster's Revised Unabridged Dictionary
    • n Echinococcus (Zoöl) 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. The adult form is not found in man.
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Century Dictionary and Cyclopedia
    • n echinococcus Tænia echinococcus in its larval (scolex) stage, which forms the so-called hydatids occurring in the liver, brain, etc., of man and other animals; the hydatid form of the wandered scolex of Tænia echinococcus, having deutoscolices or daughter-cysts formed by gemmation. This hydatid is that of the tapeworm of the dog, having several tænia-heads in the cyst; it may occur in man, commonly in the liver, giving rise to very serious disease. The word was originally a genus name, given by Rudolphi before the relationship to Tænia was known; it is now used as the name of the larval stage of the tapeworm whose specific name is the same. See cut under Tænia.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. 'echi^nos hedgehog, sea urchin + ko`kkos grain, seed, berry. So called because forming little granular bodies, each armed with hooklets and disposed upon the inner wall of the hydatid cysts


In literature:

Rein speaks of the removal of an enormous echinococcus cyst of the omentum without interruption of pregnancy.
"Anomalies and Curiosities of Medicine" by George M. Gould
To parasites of the kidney belong the echinococcus, the larval, or bladder worm, stage of the small echinococcus tapeworm of the dog.
"Special Report on Diseases of the Horse" by United States Department of Agriculture
Echinococcus cannot be understood or diagnosed by the layman.
"The Home Medical Library, Volume I (of VI)" by Various