Preventive
From BiblePortal Wikipedia
Preventive [1]
(1): ( a.) Going before; preceding.
(2): ( a.) Tending to defeat or hinder; obviating; preventing the access of; as, a medicine preventive of disease.
(3): ( n.) That which prevents, hinders, or obstructs; that which intercepts access; in medicine, something to prevent disease; a prophylactic.