myasthenia gravis

  1. a disease of impaired transmission of motor nerve impulses, characterized by episodic muscle weakness and easy fatigability, especially of the face, tongue, neck, and respiratory muscles: caused by autoimmune destruction of acetylcholine receptors.Abbreviation: MG

Origin of myasthenia gravis

1895–1900; <New Latin: serious muscle weakness

Words Nearby myasthenia gravis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for myasthenia gravis

myasthenia gravis

/ (ˈɡrɑːvɪs) /

  1. a chronic progressive disease in which the muscles, esp those of the head and face, become weak and easily fatigued

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