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Filter

/ˈfɪltə/

An object or device used to remove unwanted elements from a liquid, gas, light, or sound.

Synonyms:

A light purple filter covers the sky-screen.

The sand filter removes impurities from water.

She applied a beauty filter on her photo.

Early 15th century, from the Middle French filtre, from Medieval Latin filtrum, meaning a felt for straining or filtering.

14 mentions per 1 million words

Moderate

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