Definition of "guanosine" [guanosine]

• A nucleoside, C10H13N5O5, consisting of guanine and ribose. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Acyclovir belongs to a family of drugs known as guanosine analogue antiviral drugs."
• "Oligomerization of activated D- and L-guanosine mononucleotides on templates containing D- and L-deoxycytidylate residues"
• "The major breakthrough was Martin Rodbell's realization that there was a switch between these two steps, and that this switch, which he called the transducer, could be turned on by a high-energy compound, guanosine triphosphate."