noun Chemistry.
a crystalline disaccharide, C 1 2 H 2 2 O 1 1 , the sugar obtained from the sugarcane, the sugar beet, and sorghum, and forming the greater part of maple sugar; sugar.

1855–60; < French sucre sugar + -ose2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
sucrose (ˈsjuːkrəʊz, -krəʊs)
the technical name for sugar
[C19: from French sucre sugar + -ose²]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1857, formed from Fr. sucre "sugar" (see sugar) + chemical suffix -ose.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

sucrose su·crose (sōō'krōs')
A nonreducing crystalline disaccharide made up of glucose and fructose, found in many plants but extracted as ordinary sugar mainly from sugar cane and sugar beets, and widely used as a sweetener or preservative.

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
sucrose   (s'krōs')  Pronunciation Key 
A crystalline sugar found in many plants, especially sugar cane, sugar beets, and sugar maple. It is used widely as a sweetener. Sucrose is a disaccharide composed of fructose and glucose. Also called table sugar. Chemical formula: C12H22O11.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Photosynthesis generates sucrose, or table sugar, which is broken down into
  glucose and the sweeter fructose during ripening.
Usually one orders by degree, which is a rating not of amount of alcohol in the
  beer, but percent of sucrose extract by weight.
The body does process fructose differently from sucrose, which is table sugar.
Here you can see the results for the sucrose drinking rats exposed to chronic
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