Definition of "lactic acid" []

• A syrupy, water-soluble liquid, C3H6O3, produced in muscles as a result of anaerobic glucose metabolism, and present in sour milk, molasses, various fruits, and wines. A synthetic form of the compound is used in foods and beverages as a flavoring and preservative, in dyeing and textile printing, and in pharmaceuticals. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Dr. Ohhira’s Probiotics 12 Plus, by Essential Formulas, is the only probiotic containing the E. faecalis TH 10 strain of lactic acid bacteria, shown to be 6.25 times stronger than any other known bacteria."