lactase

[ lak-teys, -teyz ]
/ ˈlæk teɪs, -ˌteɪz /

noun Biochemistry.

an enzyme capable of hydrolyzing lactose into glucose and galactose.

Nearby words

  1. lactacidosis,
  2. lactalbumin,
  3. lactam,
  4. lactarian,
  5. lactary,
  6. lactate,
  7. lactate 2,
  8. lactate dehydrogenase,
  9. lactated ringer's injection,
  10. lactated ringer's solution

Origin of lactase

First recorded in 1890–95; lact- + -ase

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


British Dictionary definitions for lactase

lactase

/ (ˈlækteɪs, -teɪz) /

noun

any of a group of enzymes that hydrolyse lactose to glucose and galactose

Word Origin for lactase

C20: from lacto- + -ase

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

Medicine definitions for lactase

lactase

[ lăktās′ ]

n.

A galactosidase occurring in the intestine that catalyzes the hydrolysis of lactose into glucose and galactose.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for lactase

lactase

[ lăktās′ ]

An enzyme that is found in the small intestine, liver, and kidneys of mammals and catalyzes the breakdown of lactose into galactose and glucose.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.