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2 definitions found

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

 trisomy 21 /-ˌtwɛntɪˈwən/ 名詞
 21三體

From: WordNet (r) 2.0

 trisomy 21
      n : a congenital disorder caused by having an extra 21st
          chromosome; results in a flat face and short stature and
          mental retardation [syn: mongolism, mongolianism, Down's
           syndrome, Down syndrome]