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

---

Other Word Forms

• myasthenic
  adjective

---

Etymology

Origin of myasthenia

First recorded in 1855–60; my- + asthenia

---

Example Sentences

See Examples For:

myasthenia

Germinal center cells also play an important role in certain autoimmune diseases, including rheumatoid arthritis and myasthenia gravis.

From Science Daily ● Oct. 8, 2026

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

Murray had NHS treatment for the rare autoimmune condition myasthenia gravis and vowed to "win the battle for the NHS" in his first speech to parliament when he became an MP in 2019.

From BBC ● Jun. 22, 2026

His longtime partner, Keely Stahl, said the cause was myasthenia gravis, an autoimmune neuromuscular disease that weakens the skeletal muscles.

From New York Times ● Jan. 27, 2023

Esophageal paralysis is not uncommon in myasthenia gravis.

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

Random Word

Spin the wheel and learn a new word!

---