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[kuh-lis-tin] /kəˈlɪs tɪn/
noun, Pharmacology.
a toxic antibiotic polypeptide, C 45 H 85 O 10 N 13 , produced by the bacterium Bacillus colistinus, used in sulfate form against a broad spectrum of microorganisms and in the treatment of severe gastroenteritis.
Origin of colistin
1950-55; < New Latin colistinus epithet for a variety of Bacillus polymyxa, equivalent to coli- (see coliform) + -stinus, apparently an arbitrarily chosen suffix; cf. -in2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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colistin in Medicine

colistin co·lis·tin (kə-lĭs'tĭn, kō-)
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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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