I couldn't find it in Websters either. Weird. You made me search the net Halla!! This is what I found...Thanks for enriching my medical info Halla.Towards the end of the 19th century, refinements were bringing about an acceptance of the asepsis method, with particular attention to cleanliness and disinfection by the surgical team, of the patient, of the operating theatre, and steralization of the surgical equipment and instruments(49). By 1900, many surgeons had changed to asepsis, and by the end of World War I (ie 1918), only a few "old-guard Listerians" still held on to the belief in antispesis(50).