any of various antibiotics obtained from strains of a soil bacterium (Bacillus polymyxa), esp. effective against Gram-negative bacteria
Origin of polymyxinfrom Modern Latin (Bacillus) polymyx(a) ( from poly-, poly- + -myxa from Classical Greek myxa, mucus) + -in
Any of various mainly toxic antibiotics derived from strains of the soil bacterium Bacillus polymyxa and used to treat various infections with gram-negative bacteria.
Origin of polymyxinNew Latin polymyxa specific epithet ( poly- ) (Greek muxa slime ) -in