amyotrophic lateral sclerosis

amyotrophic lateral sclerosis

[ey-mahy-uh-trof-ik, -troh-fik, ey-mahy-uh-]
noun Pathology.
an incurable disease of unknown cause in which progressive degeneration of motor neurons in the brain stem and spinal cord leads to atrophy and eventually complete paralysis of the voluntary muscles. Abbreviation: ALS

1885–90; a-6 + myo- + -trophic Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
amyotrophic lateral sclerosis (ˌæmɪəʊˈtrəʊfɪk)
Also called: Lou Gehrig's disease a form of motor neurone disease in which degeneration of motor tracts in the spinal cord causes progressive muscular paralysis starting in the limbs

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

amyotrophic lateral sclerosis a·my·o·troph·ic lateral sclerosis (ā-mī'ə-trŏf'ĭk, -trō'fĭk)
A disease of the motor tracts of the lateral columns and anterior horns of the spinal cord, causing progressive muscular atrophy, increased reflexes, fibrillary twitching, and spastic irritability of muscles. Also called Charcot's disease, Lou Gehrig's disease.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
amyotrophic lateral sclerosis   (ā'mī-ə-trō'fĭk, -ə-trŏf'ĭk, ā-mī'-)  Pronunciation Key 
A chronic, progressive neurologic disease marked by gradual degeneration of the neurons in the spinal cord that control voluntary muscle movement. The disorder causes muscle weakness and atrophy and usually results in death. Also called Lou Gehrig's disease, after the American baseball player (1903-41) who was the first public figure to suffer from the disease.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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