American Heritage® Dictionary of the English Language, Fourth Edition
- n. Any of several parasitic tapeworms of the genus Echinococcus, the larvae of which infect mammals and form large, spherical cysts in the liver or lungs, causing serious or fatal disease.
Century Dictionary and Cyclopedia
- n. 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 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
- n. zoology A parasite of humans and of many domestic and wild animals, the larval stage of Taenia echinococcus, that forms compound cysts or tumours (called hydatid cysts) in various organs, but especially in the liver and lungs.
GNU Webster's 1913
- n. (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.
- n. tapeworms whose larvae are parasitic in humans and domestic animals
- From Ancient Greek ἐχῖνος ("hedgehog") + coccus (Wiktionary)
- New Latin Echīnococcus, genus name : echino- + -coccus. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The echinococcus is a tiny cestode which is the factor in the production of the well-known hydatid cysts which may be found in any part of the body.”
“Other arctic zoonotic diseases that could be influenced by climate change include botulism, paralytic shellfish poisoning, tularemia, brucellosis, echinococcus, trichinosis, and cryptosporidium.”
“Warmer temperatures may allow species with a low rate of infection, such as brucellosis in caribou or echinococcus in voles, to survive in larger numbers increasing the number of susceptible hosts and infected animals.”
“= -- The parasites found in food in this country are echinococcus, guineaworm, hookworm, trichina, and tapeworm.”
“Again, the fact that in _Tænia echinococcus_ one egg produces numerous individuals, tends to invalidate the argument that the increase of segments during development is a relic of specific genesis.”
“The dog is the host for _Taeniae marginala_, _coenurus_ and _echinococcus_.”
“She was attacked with a severe inflammation of the right eye, which had to be enucleated, and was found full of tenia echinococcus, evidently derived from the dog's tongue.”
“Some of these cases were doubtless instances of echinococcus, trichinæ, or the result of rectovesical fistula, but Riverius 13.38 mentions an instance in which, after drinking water containing worms, a person passed worms in the urine.”
“Rein speaks of the removal of an enormous echinococcus cyst of the omentum without interruption of pregnancy.”
“Delafield and Prudden report the only instance of multilocular echinococcus seen in this country.”
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