disaccharide

[dahy-sak-uh-rahyd, -rid]
noun Chemistry.
any of a group of carbohydrates, as sucrose or lactose, that yield monosaccharides on hydrolysis.
Also called double sugar.


Origin:
1890–95; di-1 + saccharide

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World English Dictionary
disaccharide or disaccharid (daɪˈsækəˌraɪd, -rɪd)
 
n
any of a class of sugars, such as maltose, lactose, and sucrose, having two linked monosaccharide units per molecule
 
disaccharid or disaccharid
 
n

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American Heritage
Medical Dictionary

disaccharide di·sac·cha·ride (dī-sāk'ə-rīd')
n.
Any of a class of carbohydrates, including lactose and sucrose, that yield two monosaccharides upon hydrolysis.

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
disaccharide   (dī-sāk'ə-rīd')  Pronunciation Key 
Any of a class of sugars, including lactose and sucrose, that are composed of two monosaccharides.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

disaccharide

any substance that is composed of two molecules of simple sugars (monosaccharides) linked to each other. Sucrose, which is formed following photosynthesis in green plants, consists of one molecule of glucose and one of fructose; lactose (milk sugar), found in the milk of all mammals, consists of glucose and galactose; and maltose, a product of the breakdown of starches during digestion, consists of two molecules of glucose. Another important disaccharide, trehalose, which is found in the circulating fluid of many insects, also consists of two molecules of glucose, but they are linked in a way such that trehalose differs from maltose.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Table sugar is sucrose, a glucose-fructose disaccharide.
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