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1. A decrease in size of an organ caused by disease or disuse
   - wasting, wasting away
    
2. Any weakening or degeneration (especially through lack of use)
   - withering

1. Undergo atrophy
   "Muscles that are not used will atrophy"

Derived forms: atrophied, atrophies, atrophying

See also: atrophic

Type of: shrink, shrivel, shrivel up, symptom, weakening, wither

Encyclopedia: Atrophy