prophylactic
1. [ noun ] (medicine,pharmacology) remedy that prevents or slows the course of an illness or disease
Synonyms: preventative preventive
Examples:

"the doctor recommended several preventatives"

Related terms: remedy
2. [ adjective ] (medicine) preventing or contributing to the prevention of disease
Synonyms: preventive preventative
Examples:

"preventive medicine" "vaccines are prophylactic" "a prophylactic drug"

Related terms: healthful
3. [ adjective ] tending to ward off
Synonyms: preventive cautionary
Examples:

"the swastika...a very ancient prophylactic symbol occurring among all peoples"- Victor Schultze

Related terms: protective
4. [ adjective ] capable of preventing conception or impregnation
Synonyms: antifertility contraceptive
Examples:

"contraceptive devices and medications"

Related terms: protective
5. [ noun ] (sexuality) contraceptive device consisting of a thin rubber or latex sheath worn over the penis during intercourse
Synonyms: rubber safety safe condom
Related terms: contraceptive
Similar spelling:   prophylaxis
  propellant