Main Entry: nu·cle·o·sid·ase Pronunciation: "n(y)ü-klE-&-'sI-"dAs, -"dAz Function: noun 1: an enzyme thatpromotes the hydrolysis of a nucleoside 2: a phosphorylase that promotes reversibly the reaction of a nucleoside with phosphate forming a base and a phosphate of ribose ordeoxyribose called also nucleoside phosphorylase
nucleosidase nu·cle·o·si·dase (n&oomacr;'klē-ə-sī'dās', -dāz', -klē-ō'sĭ-, ny&oomacr;'-) n. Any of various enzymes that catalyze the hydrolysis of nucleosides, releasing their purine or pyrimidine base.