- a monosaccharide containing five atoms of carbon, as xylose, C5H10O5, or produced from pentosans by hydrolysis.
Origin of pentose
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pentose
From the solution the author isolated crystalline galactose, but failed to isolate a pentose.
The time increase was less pronounced in the presence of the three pentose sugars used.Preservation of Bull Semen at Sub-Zero Temperatures
N. L. VanDemark
It is usual to regard furfural as invariably produced from a pentose residue.
But most of the natural gums yield a mixture of galactose, some pentose, and some complex organic acid.
They bear the same relation to the pentose sugars as do the dextrosans to glucose, etc.
- any monosaccharide containing five atoms of carbon per molecule: occur mainly in plants and the nucleic acids
C20: from penta- + -ose ²
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
- Any of a class of monosaccharides having five carbon atoms per molecule and including ribose and several other sugars.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Any of a class of simple sugars (monosaccharides) having five carbon atoms per molecule. Ribose and deoxyribose are pentoses.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.