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alpha-hydroxy acid

noun
  1. a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

alpha-hydroxy acid in Medicine

alpha-hydroxy acid

(ăl′fə-hī-drŏksē)
n.
  1. Any of various fruit acids with the capacity to trap moisture in the skin and initiate formation of collagen.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.