myasthenia gravis

noun

, Pathology.

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. : MG

myasthenia gravis

/ ˈɡrɑːvɪs /

noun

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

Word History and Origins

Origin of myasthenia gravis¹

1895–1900; < New Latin: serious muscle weakness