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[rahy-bohs] /ˈraɪ boʊs/
noun, Biochemistry
a white, crystalline, water-soluble, slightly sweet solid, C 5 H 1 0 O 5 , a pentose sugar obtained by the hydrolysis of RNA.
Origin of ribose
1890-95; < German Ribose, earlier Ribonsäure, equivalent to Ribon (from Arabinose arabinose, by arbitrary rearrangement and shortening) + Säure acid Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for ribose


/ˈraɪbəʊz; -bəʊs/
(biochem) a pentose sugar that is an isomeric form of arabinose and that occurs in RNA and riboflavin. Formula: CH2OH(CHOH)3CHO
Word Origin
C20: changed from arabinose
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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Word Origin and History for ribose

1892, from German Ribose (1891), from Ribonsäure, a tetrahydroxy acid, with first element shortened and arbitrarily rearranged from English arabinose (c.1880), a sugar which is so called because it is formed from gum arabic.

Online Etymology Dictionary, © 2010 Douglas Harper
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ribose in Medicine

ribose ri·bose (rī'bōs')
A pentose sugar occurring as a component of riboflavin, nucleotides, and nucleic acids.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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ribose in Science
A pentose sugar with a furanose structure that occurs as a component of riboflavin and RNA. Chemical formula: C5H10O5.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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