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noun, plural my·a·ses [mahy-uh-seez] /ˈmaɪ əˌsiz/. Pathology, Veterinary Pathology.
  1. myiasis.


or my·a·sis

noun, plural my·ia·ses [mahy-uh-seez] /ˈmaɪ əˌsiz/. Pathology, Veterinary Pathology.
  1. any disease that results from the infestation of tissues or cavities of the body by larvae of flies.

Origin of myiasis

1830–40; < Greek myî(a) fly + -asis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for myasis

Historical Examples

  • The name of Myasis has been given to the presence of these larv in a wound.

    Animal Parasites and Messmates

    P. J. Van Beneden

  • Myasis—By this term (spelled also myiasis, and myiosis), is meant parasitism by dipterous larv.

    Handbook of Medical Entomology

    William Albert Riley

  • The best authenticated cases of myasis of the urinary passage have been due to larv of Fannia.

    Handbook of Medical Entomology

    William Albert Riley

  • A case of myasis aurium accompanying the radical mastoid operation.

    Handbook of Medical Entomology

    William Albert Riley

British Dictionary definitions for myasis


noun plural -ses (-ˌsiːz)
  1. infestation of the body by the larvae of flies
  2. any disease resulting from such infestation

Word Origin

C19: New Latin, from Greek muia a fly
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

myasis in Medicine


(mīə-sĭs, mī-īə-sĭs)
n. pl. -ses (-sēz)
  1. Infestation of tissue by fly larvae.
  2. A disease resulting from such infestation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.