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vitamin A definition

vitamin A

a fat-soluble aliphatic alcohol, CHOH, found in fish-liver oil, egg yolk, butter, etc. or derived from carotene in carrots and other vegetables: a deficiency of this vitamin results in night blindness, a general susceptibility to infections, and degeneration of epithelial tissue: it usually occurs in two forms, vitamin A, having the formula above, and vitamin A, CHOH

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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