Definitions
1.AdjectivePreventing, hindering, or acting as an obstacle to.
2.AdjectiveCarried out to deter military aggression.
3.AdjectiveSlowing the development of an illness; prophylactic.
4.AdjectiveGoing before; preceding.
5.NounA thing that prevents, hinders, or acts as an obstacle to.
6.NounA thing that slows the development of an illness."A good preventive against heart disease is a healthy lifestyle."
7.NounA contraceptive, especially a condom.