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4 definitions found

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

 am·ni·on /ˈæmniˌɑn, ən/

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

 am·ni·on /ˈæmnɪˌɑn, ən/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Am·ni·on n.  Anat. A thin membrane surrounding the embryos of mammals, birds, and reptiles.

From: WordNet (r) 2.0

      n : thin innermost membranous sac enclosing the developing
          embryo of higher vertebrates (reptiles, birds and
          mammals) [syn: amniotic sac, amnios]
      [also: amnia (pl)]