a small nematode worm, Enterobius vermicularis, infesting the intestine and migrating to the rectum and anus, especially in children.

Origin of pinworm

First recorded in 1905–10; pin + worm Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pinworm

Historical Examples of pinworm

  • The next nematode of general interest is the pinworm (Oxyuris curvula).


    T. Spencer Cobbold

British Dictionary definitions for pinworm



a parasitic nematode worm, Enterobius vermicularis, infecting the colon, rectum, and anus of humans: family OxyuridaeAlso called: threadworm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

pinworm in Medicine




Any of various small nematode worms of the family Oxyuridae that are parasitic on mammals, especially Enterobius vermicularis, a species that infests the human intestines and rectum.seatworm threadworm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.