Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of, relating to, or derived from milk.

from The Century Dictionary.

  • Pertaining to milk; procured from milk, or from something of a similar character.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Physiol. Chem.) Of or pertaining to milk; procured from sour milk or whey
  • adjective (Physiol. Chem.) a sirupy, colorless fluid, soluble in water, with an intensely sour taste and strong acid reaction. There is one center of optical activity, and this results in the observation of three isomeric modifications all having the formula C3H6O3; one is dextrorotatory (L-lactic acid), the other levorotatory (D-lactic acid), and the third an optically inactive mixture of the first two (DL-lactic acid); chemically it is 2-hydroxypropanoic acid. Sarcolactic acid or paralactic acid occurs chiefly in dead muscle tissue, while ordinary lactic acid (DL-lactic acid) results from fermentation, such as the fermentation of milk by lactic acid bacteria. The two acids are alike in having the same constitution (expressed by the name ethylidene lactic acid), but the latter is optically inactive, while sarcolactic acid rotates the plane of polarization to the right. The third acid, ethylene lactic acid, accompanies sarcolactic acid in the juice of flesh, and is optically inactive.
  • adjective an organized ferment (Bacterium lacticum or Bacterium lactis), which produces lactic fermentation, decomposing the sugar of milk into carbonic and lactic acids, the latter, of which renders the milk sour, and precipitates the casein, thus giving rise to the so-called spontaneous coagulation of milk.
  • adjective See under Fermentation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Of, relating to, or derived from milk

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective of or relating to or obtained from milk (especially sour milk or whey)

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin lactis ("of milk"), genitive form of lac ("milk").

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Examples

  • Virtanen established the indispensability of cozymase in lactic and propionic acid fermentations, as well as the phosphorylation of sugar (1924).

    Artturi Virtanen - Biography 1964

  • We know from previous research that the drugs used in the study can have dangerous side effects, including liver damage, kidney failure, and a potentially fatal problem called lactic acidosis.

    Daily pill helps prevent HIV infection for gay men 2010

  • We know from previous research that the drugs used in the study can have dangerous side effects, including liver damage, kidney failure, and a potentially fatal problem called lactic acidosis.

    Daily pill helps prevent HIV infection for gay men 2010

  • The most commonly used culture in rural cheese factories is known as lactic culture, since its principle function is to form lactic acid from the lactose of the milk.

    Chapter 6 1989

  • Without the help of oxygen, glucose (a 6-carbon molecule) is broken down into lactic acid (3-carbon sugar), this is called lactic acid fermentation.

    WN.com - Financial News 2010

  • Without the help of oxygen, glucose (a 6-carbon molecule) is broken down into lactic acid (3-carbon sugar), this is called lactic acid fermentation.

    WN.com - Financial News 2010

  • Without the help of oxygen, glucose (a 6-carbon molecule) is broken down into lactic acid (3-carbon sugar), this is called lactic acid fermentation.

    WN.com - Financial News 2010

  • Without the help of oxygen, glucose (a 6-carbon molecule) is broken down into lactic acid (3-carbon sugar), this is called lactic acid fermentation.

    WN.com - Financial News 2010

  • They also feed on glucose and produce an acid called lactic acid.

    AllAfrica News: Latest 2009

  • Metformin hydrochloride, one of the ingredients in JANUMET, can cause a rare but serious side effect called lactic acidosis (a build-up of lactic acid in the blood) that can cause death.

    Digital50.com Digital 50 Daily Industry News RSS Feed 2009

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