colistin /co·lis·tin/ (ko-lis´tin) an antibiotic produced by Bacillus polymyxa var. colistinus, related to polymyxin and effective against many gram-negative bacteria; used as the sulfate salt.
co·lis·tin (k -l s tn, k -)n. An antibiotic produced by the bacterium Bacillus polymyxa or B. colistinus that is effective against a range of gram-negative bacteria and is used especially in the treatment of infections of the gastrointestinal tract. |
colistin
a polymyxin antibiotic, active against gram-negative organisms and used in the treatment of urinary tract infections. Called also polymyxin E.
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