atrophy
1. [ noun ] (medicine) a decrease in size of an organ caused by disease or disuse
Synonyms: wasting_away wasting
Related terms: symptom tabes kraurosis amyotrophia
2. [ verb ] (medicine) undergo atrophy
Examples:

"Muscles that are not used will atrophy"

Related terms: shrivel
3. [ noun ] any weakening or degeneration (especially through lack of use)
Synonyms: withering
Related terms: weakening fade
Similar spelling:   atrophic
  atrophied
  Atropa
  Atropos
  atropine
  Atropidae
  atrip