Definitions
1.nounAn increase in density; the act of compressing, or the state of being compressed; compaction.
2.nounThe cycle of an internal combustion engine during which the fuel and air mixture is compressed.
3.nounThe process by which data is compressed.
4.nounThe electronic process by which any sound's gain is automatically controlled.
5.nounThe deviation of a heavenly body from a spherical form.