compression ratio

Noun

 * 1)  The ratio of the volume between the cylinder head of an internal combustion engine and the piston before and after the compression stroke.
 * 2)  The ratio of the size of compressed data to the size of the original uncompressed data.

Translations

 * Danish: kompressionsforhold
 * Finnish: pakkaussuhde
 * Polish: stopień sprężania
 * Portuguese: taxa de compressão