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lactic acid

noun, Biochemistry
1.
a colorless or yellowish, syrupy, water-soluble liquid, C 3 H 6 O 3 , produced during muscle contraction as a product of anaerobic glucose metabolism, abundant in sour milk, prepared usually by fermentation of cornstarch, molasses, potatoes, etc., or synthesized: used chiefly in dyeing and textile printing, as a flavoring agent in food, and in medicine.
Origin
1780-1790
1780-90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for lactic acid
  • Carbs break down into lactic acid in your muscles, which becomes lactate in the blood.
  • The lactic acid in these products helps prevent decay.
  • The tang is the lactic acid that's been formed by the breakdown of the milk sugar, lactose.
  • Hardworking muscles release lactic acid, which causes soreness.
British Dictionary definitions for lactic acid

lactic acid

noun
1.
a colourless syrupy carboxylic acid found in sour milk and many fruits and used as a preservative (E270) for foodstuffs, such as soft margarine, and for making pharmaceuticals and adhesives. Formula: CH3CH(OH)COOH Systematic name 2-hydroxypropanoic acid
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
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lactic acid in Medicine

lactic acid n.
A syrupy, water-soluble liquid existing in three isomeric forms: one in muscle tissue and blood as a result of anaerobic glucose metabolism, a second in sour milk and wines, and a third used in foods, beverages, and pharmaceuticals.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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lactic acid in Science
lactic acid
  (lāk'tĭk)   
A syrupy, water-soluble organic acid produced when milk sours or certain fruits ferment. It is also produced in the body during the anaerobic metabolism of glucose, as in muscle tissue during exercise, where its buildup can cause cramping pains. A synthetic form of lactic acid is used as a flavoring and preservative, in dyeing and textile printing, and in pharmaceuticals. Chemical formula: C3H6O3.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Word Value for lactic

10
13
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