lactase

L1A1C3T1A1S1E1

noun

A β-galactosidase enzyme that is involved in the hydrolysis of the disaccharide lactose into constituent galactose and glucose monomers.

Similar
lactase-phlorizin hydrolaseLactaid
UncommonScrabble 9
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Meanings

nounlactase (countable and uncountable, plural lactases)

plural lactases

  1. countableuncountablebiochemistryA β-galactosidase enzyme that is involved in the hydrolysis of the disaccharide lactose into constituent galactose and glucose monomers.

    Synonyms: lactase-phlorizin hydrolase

Synonyms & antonyms

nounA β-galactosidase enzyme that is involved in the hydrolysis of the disaccharide lactose into constituent galactose and glucose monomers.

Similar
lactase-phlorizin hydrolase

More synonyms by meaning

nounany of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose

Similar
Lactaid
Broader
disaccharidase

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From lacto- + -ase.

Full word history & related roots →

Translations

Catalan lactasa
  • lactasaA β-galactosidase enzyme
Chinese Mandarin 乳糖酶
  • 乳糖酶 (rǔtángméi)A β-galactosidase enzyme
Czech laktáza
  • laktázaA β-galactosidase enzyme
Dutch lactase
  • lactaseA β-galactosidase enzyme
Esperanto laktazo
  • laktazoA β-galactosidase enzyme
Finnish laktaasi
  • laktaasiA β-galactosidase enzyme
French lactase
  • lactaseA β-galactosidase enzyme
German Laktase, Lactase
  • LaktaseA β-galactosidase enzyme
  • LactaseA β-galactosidase enzyme
Hungarian laktáz
  • laktázA β-galactosidase enzyme
Icelandic laktasi
  • laktasiA β-galactosidase enzyme
Italian lattasi
  • lattasiA β-galactosidase enzyme
Māori whākōkī ngako waiū, whākōkī reihuka
  • whākōkī ngako waiūA β-galactosidase enzyme
  • whākōkī reihukaA β-galactosidase enzyme
  • whākōkī hukawaiūA β-galactosidase enzyme
Polish laktaza
  • laktazaA β-galactosidase enzyme
Portuguese lactase
  • lactaseA β-galactosidase enzyme
Romanian lactază
  • lactazăA β-galactosidase enzyme
Russian лакта́за
  • лакта́за (laktáza)A β-galactosidase enzyme
Spanish lactasa
  • lactasaA β-galactosidase enzyme
Swedish laktas
  • laktasA β-galactosidase enzyme
Turkish laktaz
  • laktazA β-galactosidase enzyme
Vietnamese lactaza
  • lactazaA β-galactosidase enzyme
Cite this entry
APA

lactase. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/lactase

MLA

“lactase.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lactase. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “lactase,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/lactase.

Source: lactase on Wiktionary, CC BY-SA 4.0.