noun Pharmacology.

any bacteriocin produced by certain strains of Escherichia coli and having a lethal effect on strains other than the producing strain.

Nearby words

  1. colibacillosis,
  2. colibacilluria,
  3. colibacillus,
  4. colic,
  5. colic artery,
  6. colicinogen,
  7. colicky,
  8. colicroot,
  9. colicweed,
  10. coliform

Origin of colicin

1945–50; < French colicine, equivalent to coli- (see coliform) + -cine, probably extracted from names of antibiotics ending in -mycine -mycin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for colicin


[kŏlĭ-sĭn, kōlĭ-]


Any of various antibacterial proteins produced by certain strains of the colon bacillus that are lethal to other closely related strains of bacteria.

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