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(file format, compression)
A compression standard derived from LZ77; it is reportedly used in zip, gzip, PKZIP, and png, among others.

Unlike LZW, deflate compression does not use patented compression algorithms.

Used as a verb to mean to compress (not decompress!) a file which has been compressed using deflate compression. The opposite, inflate, means to decompress data which has been deflated.

Deflate is described in RFC 1951.
References in periodicals archive ?
Obviously, just as the first two games weren't enough to condemn the side, this one immense performance shouldn't see supporters getting over-excited either, especially with that great deflater, the derby, looming on the horizon.
In a few cases, figures on the GDP deflater were used.