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 (pĕn′tōs′, -tōz′)
Any of a class of monosaccharides having five carbon atoms per molecule and including ribose and several other sugars.


(Elements & Compounds) any monosaccharide containing five atoms of carbon per molecule: occur mainly in plants and the nucleic acids
[C20: from penta- + -ose2]


(ˈpɛn toʊs)

a monosaccharide containing five atoms of carbon, as xylose, C5H10O5, or produced from pentosans by hydrolysis.
[< German (1890); see pent-, -ose2]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pentose - any monosaccharide sugar containing five atoms of carbon per molecule
monosaccharide, monosaccharose, simple sugar - a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars; the simplest group of carbohydrates
References in periodicals archive ?
regulates tumor cell proliferation by altering the rate of glucose intake and the synthesis of nucleic acid ribose through the nonoxidative steps of the pentose cycle.
The megaloblastic change is thought to result from impaired nucleic acid synthesis via nonoxidative branch of the pentose cycle, where transketolase requires thiamine as a cofactor [12].
Energy, stored as ATP, is obtained by anaerobic glycolysis (90%) and pentose cycle (10%).