guanidine
gua·ni·dine
noun \ˈgwä-nə-ˌdēn\Definition of GUANIDINE
: a base CH5N3 derived from guanine that in the form of its hydrochloride acts as a parasympathetic stimulant and is used especially to denature proteins
Origin of GUANIDINE
International Scientific Vocabulary, from guanine
First Known Use: circa 1864
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