vitamin D

名词 n.
中文释义

英文释义

名词 n.
  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. uncountable
  2. A dick (“penis”), especially in a sexual context. humorous,slang,uncountable,vulgar

词形变化

vit. D alternative,abbreviation

词源

From vitamin + D (“4th letter”). From being the fourth vitamin discovered. Coined in 1922 by Elmer McCollum, who discovered the vitamin.
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