Search Result for "pentose": 
Wordnet 3.0

NOUN (1)

1. any monosaccharide sugar containing five atoms of carbon per molecule;


The Collaborative International Dictionary of English v.0.48:

Pentose \Pen"tose\, n. [Penta- + -ose.] (Chem.) Any of a group of sugars of the formula C5H10O5, such as as arabinose or ribose; -- so called from the five carbon atoms in the molecule. They are not fermented by yeast. [Webster 1913 Suppl.]
WordNet (r) 3.0 (2006):

pentose n 1: any monosaccharide sugar containing five atoms of carbon per molecule