Achromycin Achromycin /ˈeɪkroʊˌmaɪsɪn/

noun

1. An antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections  ( Achromycin , tetracycline )
   an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections