Filter

Device or process that removes unwanted components.

screen sieve

A filter is a device or process that removes unwanted components from a fluid, gas, or other substance. It can also refer to criteria used to narrow down a set of data.

/ˈfɪltər/

From Old French filtere, past participle of filer 'to seethe, strain,' from Latin filtra 'strainer,' from filum 'thread.'

strainer separator

separator device

air filter water filter coffee filter

mesh screen

system process

mechanical device process