- any of various polypeptide antibiotics derived from Bacillus polymyxa.
Origin of polymyxin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of several polypeptide antibiotics active against Gram-negative bacteria, obtained from the soil bacterium Bacillus polymyxa
C20: from New Latin Bacillus polymyxa; see poly-, myxo-, -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.