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2 definitions found

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

 provitamin A 名詞

From: WordNet (r) 2.0

 provitamin A
      n : an orange isomer of an unsaturated hydrocarbon found in many
          plants; is converted into vitamin A in the liver [syn: carotene,
           carotin]