pentosePronunciation: /ˈpɛntəʊz, -s/Definition of pentose noun Chemistry any of the class of simple sugars whose molecules contain five carbon atoms, such as ribose and xylose. They generally have the chemical formula C5H10O5. Origin: late 19th century: from penta- 'five' + -ose2pentose in other Oxford dictionaries Definition of pentose in the US English dictionary
