pixel sort: n. [Commodore users] Any compression routine which
irretrievably loses valuable data in the process of crunching it.
Disparagingly used for `lossy' methods such as JPEG. The theory, of
course, is that these methods are only used on photographic images
in which minor loss-of-data is not visible to the human eye. The
term `pixel sort' implies distrust of this theory. Compare
bogo-sort.