filter

Pronunciation

•  Audio (US)^{help, file}

Noun

Singular filter

Plural filters

An air filter

1. (countable) A filter is a piece of equipment that put gas or liquid through to take out the parts you don't want, to clean it.

Verb

Plain form filter

Third-person singular filters

Past tense filtered

Past participle filtered

Present participle filtering

1. (transitive) If you filter a gas or a liquid, you put it through something that takes out the parts you don't want.

   We filter the water.