lactase

noun

lac·​tase ˈlak-ˌtās How to pronounce lactase (audio)
-ˌtāz
: an enzyme that hydrolyzes beta-galactosides (such as lactose) and occurs especially in the intestines of young mammals and in yeasts

Examples of lactase in a Sentence

Recent Examples on the Web As an extra precaution, many brands also add lactase to their product to make sure not even trace amounts of lactose remain. Audrey Bruno, SELF, 20 June 2024 Taking a lactase enzyme supplement has been shown to prevent symptoms when taken with lactose foods (dairy). Suzie Finkel Ms, Rd, Cdn, Health, 26 May 2024 Just a single caplet packs a hefty 10,350 ALU (lactase units) compared to comparable products with as little as 3,000 ALU across two or more pills. Suzie Finkel Ms, Rd, Cdn, Health, 26 May 2024 But Take Note This powder contains a digestive enzyme blend, including lactase, amylase, and lipase, which are generally considered safe and may improve digestion in some. Alexandra Paetow Ms Rdn, Parents, 15 Apr. 2024 Two genetic causes of lactase deficiency include:1 Lactase non-persistence: In a person with lactase non-persistence, their lactase levels will get lower over time, causing a gradual decrease. Brittany Lubeck, Ms, Rdn, Verywell Health, 7 Mar. 2024 For instance, Lactaid pills contain the enzyme lactase, which helps break down milk sugar in people who are lactose intolerant. Emily Mullin, WIRED, 23 Feb. 2024 The enzymes lactase and sucrase, made in the small intestine, break down dairy sugar and sugar, respectively. Kristen Rogers, CNN, 15 Feb. 2024 Over time, your body produces less of the enzyme lactase. USA TODAY, 31 Jan. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lactase.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary

First Known Use

1891, in the meaning defined above

Time Traveler
The first known use of lactase was in 1891

Dictionary Entries Near lactase

Cite this Entry

“Lactase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lactase. Accessed 20 Jul. 2024.

Kids Definition

lactase

noun
lac·​tase ˈlak-ˌtās How to pronounce lactase (audio)
: an enzyme that breaks down lactose and related compounds and occurs especially in the intestines of young mammals and in yeasts

Medical Definition

lactase

noun
: an enzyme that hydrolyzes especially lactose to glucose and galactose and occurs especially in the intestines of young mammals and in yeasts

More from Merriam-Webster on lactase

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