Pentose
Pronunciation : Pen"tose
Part of Speech : n.
Definition : Defn: Any of a group of sugars of the formula C5H10O5, as arabinose; -- so called from the five carbon atoms in the molecule. They are not fermented by yeast.
[Penta- + -ose.] (Chem.)
Source : Webster's Unabridged Dictionary, 1913