any of various antibiotics obtained from strains of a soil bacterium (Bacillus polymyxa), esp. effective against Gram-negative bacteria
Origin of polymyxin; from 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.