remedy that prevents or slows the course of an illness or disease
"the doctor recommended several preventatives"
contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
A medicine which preserves or defends against disease; a preventive.
capable of preventing conception or impregnation
"contraceptive devices and medications"
warding off
"the swastika...a very ancient prophylactic symbol occurring among all peoples"
preventing or contributing to the prevention of disease
"preventive medicine"
"vaccines are prophylactic"
"a prophylactic drug"
Serving to prevent or protect against an undesired effect, especially disease or pregnancy