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Definition of: compression
(kəm·presh′ən) noun
1. The act of compressing or the state of being compressed.
2. The process by which a confined gas is reduced in volume through the application of pressure, as in the cylinder of an internal–combustion engine. Also com·pres·sure (kəm·presh′ər). [<L compressio, -onis <comprimere COMPRESS]
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