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See more synonyms for galactose on Thesaurus.com
noun Chemistry.
  1. 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.
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Origin of galactose

First recorded in 1865–70; galact- + -ose2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for galactose

sugar, starch, lactose, glucose, cellulose, galactose, glycogen, monosaccharide, disaccharide, sucrose, maltose, fructose, dextrose, dextrin, polysaccharide

Examples from the Web for galactose

Historical Examples of galactose

  • This was directly established for glucose, lævulose, galactose, and arabinose .

    Researches on Cellulose

    C. F. Cross

  • A complex of products was obtained, from which galactose was isolated.

  • On saponifying, it is split up into digitogenin, galactose, and dextrose.

  • The temperature coefficient of the fermentation of galactose also differs slightly from that of the other hexoses.

  • It will be seen that in one case the rate of fermentation of galactose was considerably greater than that of glucose.

British Dictionary definitions for galactose


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

galactose in Medicine


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

galactose in Science


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