myasthenia gravis

noun
myasthenia gra·​vis | \-ˈgra-vəs, -ˈgrä- \

Definition of myasthenia gravis 

: a disease that is characterized by progressive weakness and exhaustibility of voluntary muscles without atrophy and is caused by an autoimmune attack on muscle cell receptors which normally bind to acetylcholine released at nerve endings

Note: Symptoms of myasthenia gravis may include double vision, drooping of the eyelids, difficult swallowing, impaired speech, and weakness in the arms, legs, and neck.

… in myasthenia gravis, antibodies destroy the muscle's receptor proteins that serve as docks for this signal, a chemical called acetylcholine.Science News

Examples of myasthenia gravis in a Sentence

Recent Examples on the Web

His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018 His wife, Diane McGregor, said the cause was complications of the autoimmune disorder myasthenia gravis. Dennis Overbye, BostonGlobe.com, "Bradford Smith, 86, dies; showed postcards from outer space," 13 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'myasthenia gravis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of myasthenia gravis

1900, in the meaning defined above

History and Etymology for myasthenia gravis

New Latin, literally, grave myasthenia

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Dictionary Entries near myasthenia gravis

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my ass!

myasthenia

myasthenia gravis

my bet is

myc-

Mycale

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Last Updated

28 Oct 2018

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The first known use of myasthenia gravis was in 1900

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myasthenia gravis

noun
myasthenia gra·​vis | \-ˈgrav-əs, -ˈgräv- \

Medical Definition of myasthenia gravis 

: a disease characterized by progressive weakness and exhaustibility of voluntary muscles without atrophy or sensory disturbance and caused by an autoimmune attack on acetylcholine receptors at neuromuscular junctions

More from Merriam-Webster on myasthenia gravis

Britannica.com: Encyclopedia article about myasthenia gravis

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