PREVENTIVE

preventive. Preventive, a. hindering, preservative; n. an antidote

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Pre‐vent″ive (?), a. [[Cf. F. préventif.]] 1. 1. Going before; preceding.
Any previous counsel or preventive understanding. Cudworth. 2. 2. Tending to defeat or hinder; obviating; preventing the access of; as, a medicine preventive of disease.
Physic is either curative or preventive. Sir T. Browne. Preventive service, the duty performed by the armed police in guarding the coast against smuggling.