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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 ?
All the monetary variables were deflated using a deflater constructed based on the GNP deflator in each year.
And after all the horsetrading, we'll still be ploughing through page after page of tiny print wondering what a Flexible Escalator Deflater Debenture really will do for us.
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.