- any parasitic roundworm of the genus Ascaris, found in the human small intestine and causing colic and diarrhea.
Origin of ascaris
< New Latin (Linnaeus), the genus < Greek ascarís intestinal worm; compare earlier, late Middle English ascarides (plural) < Medieval Latin < Greek
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for ascaris
Ascaris cephaloptera, Rudolphi.Diaphanocephalus viper, Rudolphi.The Snakes of Europe
G. A. Boulenger
A species of Ascaris and a Trichosoma (T. entomelas) are not uncommon in the intestines.
This bird was also infested by Spiroptera crassicauda and Ascaris dispar.
This Ascaris has also been found in Cercopithecus fuliginosus and in Simia saba.
One of the commonest species is Ascaris (Heterakis) vesicularis.
- A genus of large roundworms parasitic in the small intestine of humans and other vertebrates.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.