TERMS RELATED TO ANTIMICROBIALS

Broad Spectrum: Agents which are active against more than one group or classes of microbes e.g. Tetracyclines which inhibit both gram positive as well as gram negative bacterias
Narrow Spectrum: Agents which are ative against only one group of microbes e.g. Penicillin G which is active only against gram positive bacteria
Bactericidal: Agents that kill the pathogenic microbes
Bacteriostatic: Agents which only inhibit the pathogenic microbes