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2 definitions found

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

 vitamin A 名詞

From: WordNet (r) 2.0

 vitamin A
      n : any of several fat-soluble vitamins essential for normal
          vision; prevents night blindness or inflammation or
          dryness of the eyes [syn: antiophthalmic factor, axerophthol,
           A]