prophylactics >> /ˌprɒfɪˈlaktɪk/
Definition: [noun] A medicine or course of action used to prevent disease.
Example: I took malaria prophylactics
Definition: [noun] A condom.
Example: As the primary vehicle for the sale of prophylactics, drugstores brought condoms within the reach of increasing numbers of American males.
Definition: [adjective] Intended to prevent disease.
Example: prophylactic measures