Definition of colistin
: a polymyxin produced by a bacterium (Bacillus polymyxa var. colistinus) from Japanese soil
Origin of colistin
New Latin colistinus, specific epithet of the bacterium producing it
First Known Use: 1951
Medical Definition of colistin
: a polymyxin produced by a bacterium of the genus Bacillus (B. polymyxa var. colistinus) and used against some gram-negative pathogens especially of the genera Pseudomonas, Escherichia, Klebsiella, and Shigella
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Medical Dictionary: Definition of "colistin"
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