ringworm

[ring-wurm]
noun Pathology.
  1. any of a number of contagious skin diseases caused by certain parasitic fungi and characterized by the formation of ring-shaped eruptive patches.

Origin of ringworm

late Middle English word dating back to 1375–1425; see origin at ring1, worm
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ringworm

ringworm

noun
  1. any of various fungal infections of the skin (esp the scalp) or nails, often appearing as itching circular patchesAlso called: tinea
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

Word Origin and History for ringworm
n.

name given to certain skin diseases, early 15c., from ring (n.1) + worm (n.).

Online Etymology Dictionary, © 2010 Douglas Harper

ringworm in Medicine

ringworm

[rĭngwûrm′]
n.
  1. tinea
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

ringworm in Science

ringworm

[rĭngwûrm′]
  1. Any of a number of contagious fungal infections of the skin, hair, or nails caused chiefly by species of the genera Microsporum, Trichophyton, and Epidermophyton. Ringworm often causes scaly, itching ring-shaped patches, especially on the skin. Also called tinea
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.