compression
n. C / Un. the act of pressing something into a smaller space. In computing, it means making a file smaller so it takes up less room on your device.
n. the reduction in volume or size of a substance or data through the application of pressure or algorithmic processing. Often used technically in physics to describe physical force and in informatics to describe data density.
File compression makes it easier to send large photos by email.
The engineer explained that the engine works by the rapid compression of air and fuel in the cylinders.
In digital audio production, dynamic range compression is used to reduce the volume of loud sounds and amplify quiet ones, resulting in a more consistent overall level.
Borrowed from Middle French compression, from Latin compressiō.
Uncountable when referring to the general process; countable when referring to a specific instance or mathematical method.