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- Dictionarycom·pres·sor/kəmˈpresər/
noun
- 1. an instrument or device for compressing something.
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noun
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A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. The main distinction is that the focus of a compressor is to change the density or volume of the fluid, which is mostly only a... Wikipedia