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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See vitamin D2.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Constituent of vitamin D2.

from the GNU version of the Collaborative International Dictionary of English

  • n. one of the forms of vitamin d, a fat-soluble vitamin that prevents rickets. It is an unsaturated alcohol, C28H43OH found in foods such as milk and fish liver oils. It is used as a dietary supplement in milk.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a fat-soluble vitamin that prevents rickets


calcifer(ous) + -ol1.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • Exposure to UVB radiation from the sun causes a chemical reaction in skin cells that converts a form of cholesterol to a form of vitamin D called calciferol …


  • The vitamin was also called "calciferol," since it was found to boost calcium deposits in bone.

    The World's Healthiest Foods

  • D (calciferol) helps teeth and bones stay healthy.



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