Antiseptic \An`ti*sep"tic\, Antiseptical \An`ti*sep"tic*al\, a. Counteracting or preventing putrefaction, or a putrescent tendency in the system; antiputrefactive. [1913 Webster] {Antiseptic surgery}, that system of surgical practice which insists upon a systematic use of antiseptics in the performance of operations and the dressing of wounds. [1913 Webster]