ri·bo·nu·cle·o·side 
(rī′bō-nklē-ə-sīd′, -ny-)
(rī′bō-nklē-ə-sīd′, -ny-)n.
A nucleoside that contains ribose as its sugar component.
[RIBO(SE) + NUCLEOSIDE.]
- unobjectionable
- unobstructed
- unobtrusive
- unobtrusively
- unobtrusiveness
- unoccupied
- unofficial
- unofficially
- unopposed
- unorganized
- unoriginal
- unornamented
- unorthodox
- unorthodoxly
- unorthodoxy
- unostentatious
- unostentatiously
- unpack
- unpacked
- unpaged
- unpaginated
- unpaid
- unpalatability
- unpalatable
- unpalatably