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Compression

usgb/kəmˈpreʃn/Volume
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Physical ProcessPlay
Compression means physically squeezing, often to fit something into a smaller space. SlideUsing compression, you can fit more clothes in your suitcase.
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Not Always VisiblePlay
Compression doesn't just apply to solid objects; invisible gases and liquids can also be compressed. SlideDivers use tanks with compressed air.
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Metaphorical UsePlay
Sometimes 'compression' is used in a non-physical sense, like squeezing words for a summary. SlideI used compression to shorten my essay.