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lactose

noun

lac·​tose ˈlak-ˌtōs How to pronounce lactose (audio)
-ˌtōz
: a disaccharide sugar C12H22O11 that is present in milk and yields glucose and galactose upon hydrolysis and yields especially lactic acid upon fermentation

Example Sentences

Recent Examples on the Web For the majority of our history, our bodies stopped producing lactase, the enzyme needed to break down lactose, around late childhood. Haley Weiss, The Atlantic, 27 July 2022 By piecing together Neolithic pottery fragments and ancient human genomes, scientists may have solved the riddle of how European lactose tolerance evolved. Brian Handwerk, Smithsonian Magazine, 27 July 2022 For cats who can tolerate lactose, milk should still be seen as a treat in moderation but not make up the whole diet, cathabits.net says. Mythili Devarakonda, USA TODAY, 25 July 2022 Rather, the pallets are stocked with cartons of lactose-free milk. Bayliss Wagner, USA TODAY, 24 June 2022 European Union food standards ban corn syrup, commonly found in U.S. formula, and require at least 30% of the carbohydrates to come from lactose, which scientists believe is preferable. Emily Ekins, WSJ, 22 May 2022 Some formulas utilize glucose and corn syrup for their carbohydrates as opposed to lactose which is the main carbohydrate source in breast milk. Stefani Sassos, Ms, Rdn, Cso, Cdn, Nasm-cpt, Good Housekeeping, 24 May 2022 Without that enzyme, lactose cannot be absorbed (malabsorption). Dr. Keith Roach, oregonlive, 19 May 2022 Cow's milk protein allergies are not to be confused with an intolerance for lactose, which is an inability to catalyze a specific dairy sugar. Christiaan Hetzner, Fortune, 17 May 2022 See More

Word History

Etymology

International Scientific Vocabulary

First Known Use

1847, in the meaning defined above

Time Traveler
The first known use of lactose was in 1847

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