from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An enzyme occurring in certain yeasts and in the intestinal juices of mammals and catalyzing the hydrolysis of lactose into glucose and galactose.

from Wiktionary, Creative Commons Attribution/Share-Alike License

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

from The Century Dictionary and Cyclopedia

  • n. A ferment which inverts lactose to dextrose and galactose.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose


Sorry, no etymologies found.


Wordnik is becoming a not-for-profit! Read our announcement here.


Log in or sign up to get involved in the conversation. It's quick and easy.