Definition of bacteriocin in English:
 bacteriocin
noun bakˈtɪərɪə(ʊ)sɪnˌbakˈtirēəsən
Biology A protein produced by bacteria of one strain and active against those of a closely related strain.
 Example sentencesExamples
-  Partly it may be due to its production of the so-called enterocins, a family of bacteriocins, which are antimicrobial peptides produced by some bacterial strains.
 -  They produce antibiotics known as bacteriocins that are poisonous to their own species.
 -  For example, certain protein receptors are common to a colicin and a virulent phage; others, like the fig product, can adsorb a bacteriocin, virulent phages of distinct origins, and even a temperate phage.
 -  Preliminary data indicate bacteriocins may be effective in reducing other foodborne bacteria such as Salmonella and Escherichia coli.
 -  It is becoming evident however that some strains that appear to have similar spectra of inhibitory activity produce quite different bacteriocins.
 
Origin
  
1950s: from French bactériocine, from Greek baktērion 'small cane' + a shortened form of colicin.