Definition of colistin
: a polymyxin produced by a bacterium (Bacillus polymyxa var. colistinus) from Japanese soil
Recent Examples of colistin from the Web
The woman was infected with a strain of E. coli that wards off many antibiotics, including colistin, which is considered a last-resort drug.
MCR—actually a gene, carried by gut bacteria, that confers resistance to the absolutely last-ditch antibiotic colistin—has been in the United States for at least a year, according to a new report.
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Origin and Etymology of colistin
New Latin colistinus, specific epithet of the bacterium producing it
First Known Use: 1951See Words from the same year
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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