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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 ret·ro·gres·sion /-ˈgrɛʃən/
 倒退,退化,退步

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 ret·ro·gres·sion /ˌrɛtrəˈgrɛʃən/ 名詞
 退行性,逆行性,逆行,逆向運動,反向運動,倒退,退步,衰退

From: Webster's Revised Unabridged Dictionary (1913)

 Re·tro·gres·sion n.
 1. The act of retrograding, or going backward; retrogradation.
 2. Biol. Backward development; a passing from a higher to a lower state of organization or structure, as when an animal, approaching maturity, becomes less highly organized than would be expected from its earlier stages or known relationship. Called also retrograde development, and regressive metamorphism.
 

From: WordNet (r) 2.0

 retrogression
      n 1: passing from a more complex to a simpler biological form
           [syn: degeneration]
      2: returning to a former state [syn: regression, regress, reversion,
          retroversion]