myasthenia

noun

my·​as·​the·​nia ˌmī-əs-ˈthē-nē-ə 

: muscular debility

also : myasthenia gravis

myasthenic

ˌmī-əs-ˈthe-nik 

adjective or noun

Examples of myasthenia in a Sentence

Recent Examples on the Web

Smith had battled the nerve disease myasthenia gravis for many years. — Joseph Longo, chicagotribune.com, 6 June 2017

Patients with myasthenia have muscles that tire out much more quickly than normal. — New York Times, 4 Mar. 2021

His death at the age of 74 came after a long battle with the physically debilitating illness myasthenia gravis and after a public-service career that spanned four decades. — Sheldon S. Shafer, The Courier-Journal, 7 July 2017

Trollious Harris, who has spent most of her life a few blocks from the Taylors, suffers from myasthenia gravis, another autoimmune condition, which has caused her muscles to weaken. — Charles P. Pierce, Esquire, 19 May 2017

Early-stage trials for multiple sclerosis and myasthenia gravis have been similarly encouraging. — Jason Liebowitz, New Yorker, 6 Mar. 2026

Smith, best known for his role on the classic TV series 77 Sunset Strip, died in June 2017 at the age of 84 after battling myasthenia gravisa, a nerve-and-muscle disorder, for many years. — Virginia Chamlee, PEOPLE, 16 Apr. 2026

Word History

Etymology

New Latin

First Known Use

circa 1833, in the meaning defined above

Phrases Containing myasthenia

• myasthenia gravis

Rhymes for myasthenia

• asthenia
• eugenia
• lacinia
• puccinia
• robinia
• vaccinia
• yersinia
• iphigenia
• leukopenia
• neurasthenia
• neutropenia
• schizophrenia

Medical Definition

myasthenia

noun

my·​as·​the·​nia ˌmī-əs-ˈthē-nē-ə 

: muscular debility

also : myasthenia gravis

myasthenic

-ˈthen-ik 

adjective