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1. Oxford Dictionary

   cholecalciferol

   • IPA[ˌkɒlɪkalˈsɪf(ə)rɒl]

   英式

   • n.
     one of the D vitamins, a sterol essential for the deposition of calcium in bones and formed by the action of sunlight on dehydrocholesterol in the skin.

   • noun: cholecalciferol

2. • 更多解釋

   cholecalciferol

   • IPA[ˌkōləˌkalˈsifərôl]

   美式

   • n.
     one of the D vitamins, a sterol that is formed by the action of sunlight on dehydrocholesterol ...

   Oxford American Dictionary