from the GNU version of the Collaborative International Dictionary of English
- 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.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a fat-soluble vitamin that prevents rickets
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