noun Biochemistry.
any of certain carbohydrates derived from ribose by the replacement of a hydroxyl group with a hydrogen atom.
the sugar, HOCH 2 (CHOH) 2 CH 2 CHO, obtained from DNA by hydrolysis.

1930–35; deoxy- + ribose Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
deoxyribose or desoxyribose (diːˌɒksɪˈraɪbəʊs, -bəʊz, dɛsˌɒksɪˈraɪbəʊs, -bəʊz)
a pentose sugar obtained by the hydrolysis of DNA. Formula: C5H10O4
desoxyribose or desoxyribose

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Word Origin & History

1931, from deoxy-, from de- + oxy(gen) because the 2' hydroxyl (-OH) in the sugar is in this case reduced to a hydrogen (H) by loss of an oxygen + ribose.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

deoxyribose de·ox·y·ri·bose (dē-ŏk'sē-rī'bōs')
A sugar that is a constituent of DNA.

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
deoxyribose   (dē-ŏk'sē-rī'bōs')  Pronunciation Key 
The sugar found in the side chains of DNA, differing from ribose in having a hydrogen atom instead of an OH group on one of its carbon atoms. Chemical formula: C5H10O4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica


five-carbonfive-carbon sugar component of DNA (q.v.; deoxyribonucleic acid), where it alternates with phosphate groups to form the "backbone" of the DNA polymer and binds to nitrogenous bases. The presence of deoxyribose instead of ribose is one difference between DNA and RNA (ribonucleic acid). Deoxyribose was synthesized in 1935, but it was not isolated from DNA until 1954.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The two uprights of this ladder are composed of molecules of a sugar called deoxyribose.
Below the phosphate group on the diagram is a deoxyribose sugar molecule, shaded in pink.
A notable exception, deoxyribose, as its name suggests, has a missing oxygen atom.
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