Definition of Prontosil in English:

Prontosil

noun

mass nounMedicine
historical
  • The first sulphonamide antibiotic, a reddish-brown crystalline pigment formerly used to treat a range of infections.

Origin

1930s: from German, an invented proprietary name.

Pronunciation

Prontosil

/ˈprɒntəsɪl/