1A person or thing that prevents something: a power-surge preventer
More example sentences
- On the other hand, birth control pills are an effective preventer of pregnancy, which is in turn a powerful risk factor for thrombosis.
- Preventive war rests on the premise that the preventer has accurate and reliable knowledge about the evil enemy's capabilities and intentions.
- There are two main kinds of asthma medicine, both of which involve inhalers - relievers and preventers.
Definition of preventer in:
- The US English dictionary