compression

Definitions

noun a reduction in the size of a file by encoding the data in a more efficient form

noun an act or instance of putting pressure on something
noun the act of pressing things together to form one, or of compressing something to make it hard

noun the compressing of the air/fuel mixture drawn into the combustion chamber before ignition takes place, either by the piston during its upward travel, or in the case of rotary engines by the reduction of the volume in the area between the rotor and the epitrochoid housing
noun the pressing together of a spring or shock absorber

noun the process of reducing the size of a file by encoding the data in a more efficient form. For example, if the file contains five letter ‘A’s in line, which take up five bytes of space, the compression software could encode this to 5A which takes two byes of space.

Structurally, it is the force that pushes together or crushes, as opposed to tension, which is the force that pulls apart.
The compression of any material into a smaller volume; for example, waste compaction. In specifying compaction of embankment or fill, a percent compaction at optimum moisture content is often used. Another method is to specify the equipment, height of lift, and number of passes.
The elimination of voids in construction materials, as in concrete, plaster, or soil, by vibration, tamping, rolling, or some other method or combination of methods.

A reduction in size or volume.
The encoding of data or information so that it occupies less space and/or bandwidth. There are many algorithms used for compression, and depending on the information being encoded, space savings can range from under 10% to over 99%. Compression can also be achieved by increasing packing density. Also called compaction, data compression, or information compression.
The variation in the gain of a signal, so that the lower magnitude levels have a higher effective gain than the higher magnitude levels. This results in a more balanced output, where lower-level signals have a better signal-to-noise ratio, while higher levels signal do not overload.
synonymcompaction

noun the act of squeezing or pressing
noun a serious condition in which the brain is compressed by blood or cerebrospinal fluid accumulating in it or by a fractured skull

noun the process of reducing the size of a computer file by encoding the data in a more efficient form

noun the compression of ground and making it hard, e.g. by driving over it with heavy machinery or as the result of a lot of people walking on it

17 definitions in context