Definition of pentose in English:

Share this entry


Pronunciation: /ˈpentōs/


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.
Example sentences
  • The pentose sugars, whose molecules contain only five carbon atoms instead of six, caramelize very well.
  • The salvage pathways combine adenine with a pentose to alter the adenosine nucleotide pool inventory.
  • The pentose phosphate pathway is primarily an anabolic pathway that utilizes the 6 carbons of glucose to generate 5 carbon sugars and reducing equivalents.


Late 19th century: from penta- 'five' + -ose2.

For editors and proofreaders

Syllabification: pen·tose

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.