ˈzīl(y)əˌlōs also -ōz noun
( -s )
Etymology: xyl- + -ulose (as in cellulose )
: a ketose sugar C 5 H 10 O 5 of the pentose class that is formed from xylose by epimerization and from d -arabitol by bacterial oxidation, that like ribulose plays a role in carbohydrate metabolism, and that is found in the urine in cases of pentosuria; threo -pentulose