of, relating to, or obtained from milk.

Origin of lactic

First recorded in 1780–90; lact- + -ic
Related formsnon·lac·tic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lactic

Contemporary Examples of lactic

  • Cheese makers also often add cultures or lactic acid to their milk to keep it from spoiling during fermentation.

    The Daily Beast logo
    Why We Love Stinky Cheese

    Stacey Slate

    January 14, 2010

Historical Examples of lactic

British Dictionary definitions for lactic



relating to or derived from milk

Word Origin for lactic

C18: from Latin lact-, lac milk
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

Word Origin and History for lactic

"pertaining to milk," 1790 (in lactic acid; so called because it was obtained from sour milk), from French lactique, from Latin lactis, genitive of lac "milk" (see lactation) + French -ique.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for lactic




Of, relating to, or derived from milk.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.