- antiseptic [an΄tə sep′tik]adj.1. preventing infection, decay, etc. by inhibiting the action of microorganisms2. using antiseptics3. free from infection or infectious agents; sterile4. very clean or tidy5. untouched by life, its problems, emotions, etc. [an antiseptic mind]n.any substance that inhibits the action of microorganismsantisepticallyadv.
English World dictionary. V. Neufeldt. 2014.