These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guanidine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: a base CH5N3 that is derived from guanine, is found especially in young tissues, and is used in organic synthesis and that in the form of its hydrochloride CH5N3·HCl is used as a drug to enhance acetylcholine activity
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