Definitions

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

  • n. Ergosterol activated by ultraviolet irradiation; vitamin D2.

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

  • n. a fat-soluble vitamin that prevents rickets

Etymologies

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

(ultra)vio(let) + (ergo)sterol.

Examples

  • We looked for other ways and we found that the active principle in cod liver oil was viosterol.

    The Prolongation of Life

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