1. 
[syn: antibacterial, antibacterial drug, bactericide]
ADJECTIVE (1)
1.  destroying bacteria or inhibiting their growth; 
The Collaborative International Dictionary of English v.0.48:
Antibacterial \An`ti*bac*te"ri*al\, a. (Med.)
   (a) killing or inhibiting the growth of bacteria; -- applied
       also to serum for protection against bacterial diseases.
   (b) Opposed to the bacterial theory of disease. [archaic]
       [Webster 1913 Suppl. +PJC]
The Collaborative International Dictionary of English v.0.48:
Antibacterial \An`ti*bac*te"ri*al\, n. (Med.)
   a chemical substance which kills or inhibits the growth of
   bacteria.
   [PJC]
WordNet (r) 3.0 (2006):
antibacterial
    adj 1: destroying bacteria or inhibiting their growth
    n 1: any drug that destroys bacteria or inhibits their growth
         [syn: antibacterial, antibacterial drug, bactericide]