Medical Dictionary
nucleoside
noun nu·cle·o·side \ˈn(y)ü-klē-ə-ˌsīd\
Medical Definition of NUCLEOSIDE
: a compound (as guanosine or adenosine) that consists of a purine or pyrimidine base combined with deoxyribose or ribose and is found especially in DNA or RNA—compare nucleotide
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