名詞 nucleoside:

1. a glycoside formed by partial hydrolysis of a nucleic acid

nu.cle.o.side

n.（名詞）
Any of various compounds consisting of a sugar, usually ribose or deoxyribose, and a purine or pyrimidine base, especially a compound obtained by hydrolysis of a nucleic acid, such as adenosine or guanine.
核苷：由糖，通常是核糖或脫氧核糖和嘌呤或嘧啶基組成的化合物，尤指從核酸水解中獲得的化合物，如腺嘌呤核苷或鳥(niǎo)嘌呤