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amyotrophic lateral sclerosis

[ey-mahy-uh-trof-ik, -troh-fik, ey-mahy-uh-] /ˌeɪ maɪ əˈtrɒf ɪk, -ˈtroʊ fɪk, eɪˌmaɪ ə-/
noun, Pathology
1.
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.
Also called Lou Gehrig's disease.
Origin
1885-1890
1885-90; a-6 + myo- + -trophic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for amyotrophic lateral scleroses

amyotrophic lateral sclerosis

/ˌæmɪəʊˈtrəʊfɪk/
noun
1.
a form of motor neurone disease in which degeneration of motor tracts in the spinal cord causes progressive muscular paralysis starting in the limbs Also called Lou Gehrig's disease
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
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Word Origin and History for amyotrophic lateral scleroses

amyotrophic lateral sclerosis

n.

by 1881, from French, first word from Greek a-, privative prefix, + mys, myos "muscle" (see muscle (n.)) + trophikos "feeding," from trophe "nourishment" (see -trophy). Often known in U.S. as Lou Gehrig's disease, after the New York Yankees baseball player (1903-1941) who was diagnosed with it in 1939.

Online Etymology Dictionary, © 2010 Douglas Harper
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amyotrophic lateral scleroses in Medicine

amyotrophic lateral sclerosis a·my·o·troph·ic lateral sclerosis (ā-mī'ə-trŏf'ĭk, -trō'fĭk)
n.
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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amyotrophic lateral scleroses in Science
amyotrophic lateral sclerosis
  (ā'mī-ə-trō'fĭk, -ə-trŏf'ĭk, ā-mī'-)   
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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