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motor neuron disease in Medicine

motor neuron disease

n.
  1. Any of various diseases of motor neurons, such as progressive muscular atrophy, amyotrophic lateral sclerosis, progressive bulbar paralysis, and primary lateral sclerosis.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.