[an.ti.bi.ot.ic] adj (1894) 1: tending to prevent, inhibit, or destroy life
2: of or relating to antibiotics or to antibiosis -- an.ti.bi.ot.i.cal.ly adv
[2]antibiotic n (1943): a substance produced by or a semisynthetic substance derived from a microorganism and able in dilute solution to inhibit or kill another microorganism