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Wordabulary

filter

Pronunciation
Noun A2 Elementary

Quick answer

A device or material that removes unwanted particles or substances as a liquid or gas passes through it.

"Remember to change the air filter in the furnace every few months."

Test yourself

Which word fits the gap? "Remember to change the air _____ in the furnace every few months."

Answer: filter

In your own words, what does "filter" mean?

A device or material that removes unwanted particles or substances as a liquid or gas passes through it.

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