What does "preventive" mean?

Preventive: 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. [Eng]

Additional senses

  1. 2.That which prevents, hinders, or obstructs; that which intercepts access; in medicine, something to prevent disease; a prophylactic.

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