- Common name for species of the genus Strongyloides; sometimes applied to any of the smaller parasitic nematodes.
* * *thread·worm 'thred-.wərm n any long slender nematode worm (as a pinworm or strongyle)
* * *(pinworm)n.a parasitic nematode worm of the genus Enterobius (Oxyuris), which lives in the upper part of the human large intestine. The threadlike female worm, some 12 mm long, is larger than the male; it emerges from the anus in the evening to deposit its eggs, and later dies. If the eggs are swallowed and reach the intestine they develop directly into adult worms. Threadworms cause enterobiasis, a disease common in children throughout the world.
* * *thread·worm (thredґwərm) any long slender nematode, such as members of the genera Capillaria and Strongyloides. Called also hairworm.
Medical dictionary. 2011.