[ guh-lak-tohs ]
/ gəˈlæk toʊs /

noun Chemistry.

a white, crystalline, water-soluble hexose sugar, C6H12O6, obtained in its dextrorotatory form from milk sugar by hydrolysis and in its levorotatory form from mucilages.

Origin of galactose

First recorded in 1865–70; galact- + -ose2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for galactose

British Dictionary definitions for galactose

/ (ɡəˈlæktəʊz, -əʊs) /


a white water-soluble monosaccharide found in lactose. Formula: C 6 H 12 O 6
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

Medical definitions for galactose

[ gə-lăktōs′ ]


A monosaccharide commonly occurring in lactose.brain sugar
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for galactose

[ gə-lăktōs′ ]

A monosaccharide commonly occurring in lactose and in certain pectins, gums, and mucilages. Chemical formula: C6H12O6.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.