noun Chemistry.

a colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Origin of xylose

1890–95; < Greek xýl(on) wood + -ose2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for xylose

Historical Examples of xylose

  • No trace of this substance is obtained from the xylose product.

  • When finally hydrolyzed, they yield arabinose and xylose, respectively.

    The Chemistry of Plant Life

    Roscoe Wilfred Thatcher

  • The product of hydrolysis appears, therefore, to be xylose or a closely related derivative.

  • All attempts to obtain a crystallisation of xylose from the solution neutralised (BaCO3), filtered, and evaporated, failed.

  • They have found it possible to work up the corn cobs into glucose and xylose by heating with acid.

    Creative Chemistry

    Edwin E. Slosson

British Dictionary definitions for xylose



a white crystalline dextrorotatory sugar found in the form of xylan in wood and straw. It is extracted by hydrolysis with acids and used in dyeing, tanning, and in foods for diabetics. Formula: C 5 H 10 O 5
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

xylose in Medicine




A white crystalline sugar used in dyeing and tanning and in diabetic diets.wood sugar
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

xylose in Science



A white crystalline sugar extracted from wood, straw, and corn. It is used in dyeing and tanning and as a substitute for sucrose in diabetic diets. Chemical formula: C5H10O5.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.