[1] : 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.
see also:
c5h10o5 arabinose ribose 

[2] : WordNet (r) 2.0

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

Pentose >> P Words
Pentose, definition of term: Pentose
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