myasthenia

[ mahy-uh s-thee-nee-uh ]
/ ˌmaɪ əsˈθi ni ə /

noun Pathology.

muscle weakness.

Origin of myasthenia

First recorded in 1855–60; my- + asthenia

Related forms

my·as·then·ic [mahy-uh s-then-ik] /ˌmaɪ əsˈθɛn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for myasthenia

British Dictionary definitions for myasthenia

myasthenia

/ (ˌmaɪəsˈθiːnɪə) /

noun

any muscular weakness

Derived Forms

myasthenic (ˌmaɪəsˈθɛnɪk), adjective

Word Origin for myasthenia

C19: from myo- + asthenia
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 myasthenia

myasthenia

[ mī′əs-thēnē-ə ]

n.

Abnormal muscular weakness or fatigue.
Myasthenia gravis.

Related forms

my′as•thenic (-thĕnĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.