de·gen·er·a·tion /dɪˌʤɛnəˈreʃən, ˌdi-/
  退化,惡化,墮落
  de·gen·er·a·tion /dɪˌʤɛnəˈreʃən, ˌdɪ-/ 名詞
  變性,退化,變質
  De·gen·er·a·tion n.
  1. The act or state of growing worse, or the state of having become worse; decline; degradation; debasement; degeneracy; deterioration.
     Our degeneration and apostasy.   --Bates.
  2. Physiol. That condition of a tissue or an organ in which its vitality has become either diminished or perverted; a substitution of a lower for a higher form of structure; as, fatty degeneration of the liver.
  3. Biol. A gradual deterioration, from natural causes, of any class of animals or plants or any particular organ or organs; hereditary degradation of type.
  4. The thing degenerated. [R.]
     Cockle, aracus, . . . and other degenerations.   --Sir T. Browne.
  Amyloid degeneration, Caseous degeneration, etc. See under Amyloid, Caseous, etc.
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  degeneration
       n 1: the process of declining from a higher to a lower level of
            effective power or vitality or essential quality [syn: devolution]
            [ant: development]
       2: the state of being degenerate in mental or moral qualities
          [syn: degeneracy, decadence, decadency]
       3: passing from a more complex to a simpler biological form
          [syn: retrogression]