air cleaner

American  

noun

1. a filtering device for removing impurities from air.

   Many cars have air cleaners with replaceable filters.

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air cleaner British  

noun

1. Also called: air filter.  a filter that prevents dust and other particles from entering the air-intake of an internal-combustion engine

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Etymology

Origin of air cleaner

First recorded in 1925–30

Example Sentences

"That way your air-con system is less likely to be a source of infection and irritation and more likely to actually make the air cleaner."

From BBC • Aug. 31, 2025

This can be a desired effect because it makes the air cleaner for a while -- but over time, the colour changes and needs to be renewed.

From Science Daily • Mar. 25, 2024

An odor reducing air cleaner, right, also runs inside the home.

From Los Angeles Times • Dec. 12, 2023

The streets are quieter than those of the bustling capital, the air cleaner and the pace of life half a beat slower.

From New York Times • Nov. 25, 2023

The silk was finer, the air cleaner, the rice sweeter, the fields more fertile, the girls prettier, the boys stronger when he was a young man.

From "Dragonwings" by Laurence Yep