myasthenia

noun
my·​as·​the·​nia | \ˌmī-əs-ˈthē-nē-ə \

Definition of myasthenia 

: muscular debility also : myasthenia gravis

Keep scrolling for more

Other Words from myasthenia

myasthenic \ -​ˈthe-​nik \ adjective or noun

Examples of myasthenia in a Sentence

Recent Examples on the Web

That doctor argued that although myasthenia often causes weakness in the muscles of the eyes and mouth — not unlike what this woman had — that weakness usually comes and goes. Lisa Sanders, M.d., New York Times, "All Signs Pointed to a Stroke. Then the Tests Come Back Negative.," 26 Sep. 2017 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, "Former mayor, judge-executive Armstrong remembered at service," 7 July 2017 Smith had battled the nerve disease myasthenia gravis for many years. Joseph Longo, chicagotribune.com, "Roger Smith, star of '77 Sunset Strip,' husband of actress Ann-Margret, dies at 84," 6 June 2017 Mr. Smith, who had given up performing to manage his wife’s career, had been diagnosed with myasthenia gravis, an autoimmune neuromuscular disease that causes extreme weakness. Adam Bernstein, Washington Post, "Roger Smith, a star of TV’s ‘77 Sunset Strip,’ dies at 84," 5 June 2017 After a year and a half of tests and several brutal eye surgeries, he was given a diagnosis of myasthenia gravis, a rare autoimmune disease that interferes with the way nerves and muscles communicate. Kim Severson, New York Times, "Chef Sean Brock Puts Down the Bourbon and Begins a New Quest," 3 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, "Meanwhile, These Americans Are Being Poisoned," 19 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'myasthenia.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of myasthenia

circa 1833, in the meaning defined above

History and Etymology for myasthenia

New Latin

Keep scrolling for more

Learn More about myasthenia

Share myasthenia

Dictionary Entries near myasthenia

Myaria

-myaria

my ass!

myasthenia

myasthenia gravis

my bet is

myc-

Statistics for myasthenia

Look-up Popularity

Time Traveler for myasthenia

The first known use of myasthenia was circa 1833

See more words from the same year

Keep scrolling for more

More Definitions for myasthenia

myasthenia

noun
my·​as·​the·​nia | \ˌmī-əs-ˈthē-nē-ə \

Medical Definition of myasthenia 

: muscular debility also : myasthenia gravis

Other Words from myasthenia

myasthenic \ -​ˈthen-​ik \ adjective

More from Merriam-Webster on myasthenia

Britannica English: Translation of myasthenia for Arabic Speakers

Comments on myasthenia

What made you want to look up myasthenia? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

playful or foolish behavior

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!