inosine
noun
ino·sine ˈi-nə-ˌsēn 
ˈī-
ˈī- -sən
: a nucleoside C10H12N4O5 that is composed of hypoxanthine and ribose, that in the form of its monophosphate is a biosynthetic precursor of both AMP and its guanosine analog, and that binds to adenine, cytosine, or uracil especially in some transfer RNAs compare poly i entry c
Example Sentences
Recent Examples on the Web These proteins bind to RNAs and alter their sequence by changing a familiar base known as adenosine into a molecule called inosine. 
Sara Reardon, Scientific American, 5 Feb. 2020 Although not one of the canonical RNA bases, inosine is read by the cell’s protein-translation machinery as the familiar guanosine. Sara Reardon, Scientific American, 5 Feb. 2020
Sara Reardon, Scientific American, 5 Feb. 2020 Although not one of the canonical RNA bases, inosine is read by the cell’s protein-translation machinery as the familiar guanosine. Sara Reardon, Scientific American, 5 Feb. 2020 Word History
Etymology
International Scientific Vocabulary inosinic acid (the acid C10H13N4O8P; inosinic, from Greek in-, is sinew + International Scientific Vocabulary -ose entry 2 + -in entry 1 + -ic entry 1) + -ine entry 2
First Known Use
1911, in the meaning defined above
Medical Definition
inosine
noun
ino·sine ˈin-ə-ˌsēn ˈī-nə-
ˈī-nə- -sən
: a crystalline nucleoside C10H12N4O5 that is composed of hypoxanthine and ribose, that in the form of its monophosphate is a biosynthetic precursor of both AMP and its guanosine analog, and that binds to adenine, cytosine, or uracil especially in some transfer RNAs