Wordnet 3.0
NOUN (1)
1.
thickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord;
results in progressive muscle atrophy that starts in the limbs;
[syn: amyotrophic lateral sclerosis, ALS, Lou Gehrig's disease]
WordNet (r) 3.0 (2006):
amyotrophic lateral sclerosis
n 1: thickening of tissue in the motor tracts of the lateral
columns and anterior horns of the spinal cord; results in
progressive muscle atrophy that starts in the limbs [syn:
amyotrophic lateral sclerosis, ALS, Lou Gehrig's
disease]