nucleoside

== English == === Etymology === Probably from nucleo- + (glyc)oside. === Pronunciation === IPA(key): /ˈn(j)u(ː)kliəˌsaɪd/ (US) IPA(key): /ˈn(j)u(ː)kliəˌsaɪd/, /ˈn(j)u(ː)klioʊˌsaɪd/ === Noun === nucleoside (plural nucleosides) (biochemistry) an organic molecule in which a nitrogenous heterocyclic base (or nucleobase), which can be either a double-ringed purine or a single-ringed pyrimidine, is covalently attached to a five-carbon pentose sugar (deoxyribose in DNA or ribose in RNA). When the phosphate group is covalently attached to the pentose sugar, it forms a nucleotide. ==== Hyponyms ==== adenosine guanosine cytidine thymidine uridine ==== Meronyms ==== nucleobase ==== Derived terms ==== ==== Translations ==== === See also === DNA nucleobase nucleotide RNA == Italian == === Pronunciation === IPA(key): /nu.kle.oˈzi.de/ Rhymes: -ide Hyphenation: nu‧cle‧o‧sì‧de === Noun === nucleoside m (plural nucleosidi) (biochemistry) nucleoside