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.

1890–95; < Greek xýl(on) wood + -ose2

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World English Dictionary
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

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American Heritage
Medical Dictionary

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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American Heritage
Science Dictionary
xylose   (zī'lōs')  Pronunciation Key 
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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Example sentences
The limiting factor is its by-products: both bacteria break down cellulose into glucose and other sugars such as xylose.
The economics of the process will depend on the market for xylose.
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