筋きん萎い縮しゅく症しょうきんいしゅくしょうMeanings1nounmuscular atrophy; amyotrophymedicine›Medical term for the wasting or loss of muscle tissue. Often used in compound disease names like 脊髄性筋萎縮症 (spinal muscular atrophy).筋きん萎い縮しゅく症しょうは、筋きん肉にくが