at·ro·phy /ˈætrəfi/
  萎縮,萎縮症
  at·ro·phy /ˈætrəfɪ/ 名詞
  At·ro·phy n.  A wasting away from lack of nourishment; diminution in bulk or slow emaciation of the body or of any part.
  At·ro·phy, v. t. [p. p. Atrophied ] To cause to waste away or become abortive; to starve or weaken.
  At·ro·phy, v. i. To waste away; to dwindle.
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  atrophy
       n 1: a decrease in size of an organ caused by disease or disuse
            [syn: wasting, wasting away]
       2: any weakening or degeneration (especially through lack of
          use) [syn: withering]
       v : undergo atrophy; "Muscles that are not used will atrophy"
       [also: atrophied]