ribonucleoside ri·bo·nu·cle·o·side (rī'bō-n&oomacr;'klē-ə-sīd', -ny&oomacr;'-)
n.
A nucleoside that contains ribose as its sugar component; as in uridine.
| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |