purifiers

noun
UK /ˈpjʊərɪfaɪəz/
US /ˈpjʊrɪfaɪərz/

Purifiers are machines or things that clean the air or water so it is safe and fresh.

We put air purifiers in the bedroom to help us breathe better.


OTHER MEANINGS

2. Devices that remove dirt and germs from water so people can drink it.

The camp used water purifiers before filling everyone's bottles.

3. People or things that make something pure or free from bad elements.

These machines are great purifiers of the smoky air in the city.

4. Systems in cars or factories that clean exhaust fumes before they go into the air.

New cars have exhaust purifiers to reduce pollution.