[ lak-teys, -teyz ]
/ ˈlæk teɪs, -ˌteɪz /
an enzyme capable of hydrolyzing lactose into glucose and galactose.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for lactase
/ (ˈlækteɪs, -teɪz) /
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
[ lăk′tās′ ]
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
[ lăk′tās′ ]
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.