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Definition of Xanthosine
1. Noun. (organic compound) A nucleoside derived from xanthine and ribose. ¹
¹ Source: wiktionary.com
Medical Definition of Xanthosine
1. 9-beta-d-ribosylxanthine;the deamination product of guanosine (O replacing -NH2). Synonym: xanthine ribonucleoside. Abbreviation: Xao (05 Mar 2000)