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myotonia

American

[mahy-uh-toh-nee-uh] / ˌmaɪ əˈtoʊ ni ə /

noun

Pathology.

tonic muscle spasm or muscular rigidity.

myotonia British

/ ˌmaɪəˈtɒnɪk, ˌmaɪəˈtəʊnɪə /

noun

Also called: amyotonia. lack of muscle tone, frequently including muscle spasm or rigidity

"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

myotonic adjective

Etymology

Origin of myotonia

First recorded in 1895–1900; myo- + -tonia

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.

These mice exhibited severe myotonia, muscle weakness, impaired mobility, respiratory defects, and a marked reduction in lifespan.

From Science Daily • Jan. 2, 2024

Examples include uses of the drug mexiletine to treat the rare muscle disease non-dystrophic myotonia, and experimental treatments for the Ebola virus.

From Nature • Apr. 28, 2015

He had been labeled with a number of interesting diagnoses, such as chorea, epilepsy, myotonia, hysteria, and neurasthenia.

From Anomalies and Curiosities of Medicine by Pyle, Walter L. (Walter Lytle)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023