lactose Hear it!

lactose definition

lac·tose (lak′tōs′)

noun

a white, crystalline disaccharide found in milk and prepared by evaporation of the whey leaving the crystallized sugar: used in infant foods, medicine, etc.

Etymology: lact(o)- + -ose

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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