[ pin-wurm ]
/ ˈpɪnˌwɜrm /


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

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

    Parasites|T. Spencer Cobbold

British Dictionary definitions for pinworm


/ (ˈpɪnˌwɜːm) /


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

Medicine definitions for pinworm


[ pĭnwûrm′ ]


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.