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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 ?
In this way, we not only can annul eigenvalues, but also deflate the corresponding left and right invariant subspaces.
Even the bottom of tranquil Yellowstone Lake, where tourists lazily fish trout, bulges and deflates.
The air pump inflates and deflates Roborana's throat sac, made from a condom, in sync with the calls.
The world's first 'intelligent' road hump which deflates for emergency vehicles and drivers going under a set speed
As vehicles drive over it at the designated speed, the system deflates, minimising disruption.
When a saline-filled implant deflates, it usually happens quickly.