Dictionary
ri•bo•nu•cle•o•side
Pronunciation: (rī"bō-nOO'klē-u-sīd", -nyOO'-), [key]—
n. Biochem.
a ribonucleotide precursor that contains ribose and a purine or pyrimidine base.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.