[n] contraceptive device consisting of a thin rubber or latex sheath worn over the penis during intercourse
[n] remedy that prevents or slows the course of an illness or disease; "the doctor recommended several preventatives"
[adj] preventing or contributing to the prevention of disease; "preventive medicine"; "vaccines are prophylactic"; "a prophylactic drug"
[adj] tending to ward off; "the swastika...a very ancient prophylactic symbol occurring among all peoples"- Victor Schultze
[adj] capable of preventing conception or impregnation; "contraceptive devices and medications"