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myasthenia

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

noun

Pathology.
  1. muscle weakness.


myasthenia British  
/ ˌmaɪəsˈθiːnɪə /

noun

  1. any muscular weakness

  2. short for myasthenia gravis

"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

Other Word Forms

Etymology

Origin of myasthenia

First recorded in 1855–60; my- + asthenia

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The firm helped build, for example, a tool that screens for a rare neuromuscular disorder called myasthenia gravis.

From The Wall Street Journal Aug. 15, 2026

Blackmore victim Paul Stevens, who was forced to retire from work due to an auto-immune disease called myasthenia gravis, invested his ill-health retirement benefit into the fund.

From BBC Aug. 16, 2022

In patients with the autoimmune disease myasthenia gravis, muscle cell receptors that induce contraction in response to acetylcholine are targeted by antibodies.

From Textbooks Jun. 9, 2022

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.

From New York Times Jul. 3, 2017

Esophageal paralysis is not uncommon in myasthenia gravis.

From Bronchoscopy and Esophagoscopy A Manual of Peroral Endoscopy and Laryngeal Surgery by Chevalier Jackson

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