Medical Dictionary
prontosil
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noun
pron·to·sil
\ˈprän-tə-ˌsil\
Medical Definition of prontosil
: any of three sulfonamide drugs:a: a red azo dye C12H13N5O2S that was the first sulfa drug tested clinically—called also prontosil rubrumb: sulfanilamidec: azosulfamide
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