'vitamin D' definitions:

Definition of 'vitamin D'

From: WordNet
noun
A fat-soluble vitamin that prevents rickets [syn: vitamin D, calciferol, viosterol, ergocalciferol, cholecalciferol, D]

Definition of 'vitamin D'

From: GCIDE
  • vitamin D \vitamin D\ n. any of several chemically related fat-soluble vitamins that prevent rickets. It is found in fish-liver oils, egg yolks and milk. Component vitamin D2 is also called calciferol, and vitamin D3 is called cholecalciferol.
  • Syn: calciferol, ergocalciferol, cholecalciferol. [WordNet 1.5]