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[zahy-lohs] /ˈzaɪ loʊs/
noun, Chemistry.
a colorless, crystalline pentose sugar, C 5 H 10 O 5 , 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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for xylose
Historical Examples
  • 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
  • But glucose can be more cheaply obtained from other starchy or woody materials and they cannot find a market for the xylose.

    Creative Chemistry

    Edwin E. Slosson
British Dictionary definitions for xylose


/ˈzaɪləʊz; -ləʊs/
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: C5H10O5
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
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xylose in Medicine

xylose xy·lose (zī'lōs')
A white crystalline sugar used in dyeing and tanning and in diabetic diets. Also called wood sugar.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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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 © 2002. Published by Houghton Mifflin. All rights reserved.
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