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multiple sclerosis

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noun Pathology.
  1. a chronic degenerative, often episodic disease of the central nervous system marked by patchy destruction of the myelin that surrounds and insulates nerve fibers, usually appearing in young adulthood and manifested by one or more mild to severe neural and muscular impairments, as spastic weakness in one or more limbs, local sensory losses, bladder dysfunction, or visual disturbances.
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Origin of multiple sclerosis

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for multiple sclerosis

multiple sclerosis

noun
  1. a chronic progressive disease of the central nervous system characterized by loss of some of the myelin sheath surrounding certain nerve fibres and resulting in speech and visual disorders, tremor, muscular incoordination, partial paralysis, etcAlso called: disseminated sclerosis
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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

Word Origin and History for multiple sclerosis

n.

first attested 1877; so called because it occurs in patches.

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Online Etymology Dictionary, © 2010 Douglas Harper

multiple sclerosis in Medicine

multiple sclerosis

n.
  1. A chronic degenerative disease of the central nervous system in which gradual destruction of myelin occurs in patches throughout the brain or spinal cord or both, interfering with the nerve pathways and causing muscular weakness, loss of coordination, and speech and visual disturbances. It occurs chiefly in young adults and is thought to be caused by a defect in the immune system that may be of genetic or viral origin.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

multiple sclerosis in Science

multiple sclerosis

[sklə-rōsĭs]
  1. A chronic degenerative disease of the central nervous system in which gradual destruction of myelin occurs in the brain or spinal cord or both, interfering with the nerve pathways and causing muscular weakness, loss of coordination, and speech and visual disturbances. It occurs chiefly in young adults and is thought to be caused by a defect in the immune system that may be of genetic or viral origin.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

multiple sclerosis in Culture

multiple sclerosis

[(skluh-roh-sis)]

A chronic disease of the central nervous system characterized by the hardening of patches of tissue in the brain and spinal cord. The cause of this disease has to do with damage to the sheathes of nerves, and there is no specific treatment. It occurs in varying degrees of severity and, in the worst case, can result in permanent paralysis.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.