1. <file format, tool> An old archive format for IBM PC. The format is now so obscure that it is only likely to be supported by jack-of-all-trades decompression programs such as WINZIP.
2. <mathematics, data> An edge in a tree. "branch" is a generally more common synonym.
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Nearby terms: ar « arbitrary precision calculator « ARC « arc » Arcade » ArchBSD » archie