vitamin D

1. 1.

   Any of a number of fat-soluble vitamins, required for normal bone development and preventing rickets, that can be manufactured in the skin on exposure to sunlight.

   多种脂溶性维生素之一,为正常骨骼发育和预防佝偻病所必需,皮肤经阳光照射后可合成。

维生素D；[医] 维生素D