Source : WordNet®

mod
     n : a British teenager or young adult in the 1960s; noted for
         their clothes consciousness and opposition to the rockers

mod
     adj : relating to a recently developed fashion or style; "their
           offices are in a modern skyscraper"; "tables in
           modernistic designs"; [syn: {modern}, {modernistic}]

Source : Free On-Line Dictionary of Computing

mod
     
        1. 
        (module) The filename extension for a sampled music file
        format that originated on the {Commodore} {Amiga}.  A .MOD
        file is composed of digitised sound samples, arranged in
        patterns to create a song. There are .MOD players for most
        {personal computer}s including {Amiga}, {Archimedes}, {IBM
        PC}, and {Macintosh}.
     
        An {IBM PC} will require a {sound card} capable of handling
        digitised samples ({Sound Blaster}, {Sound Blaster Pro},
        {GUS}) and slower {Intel 80386}-based PCs may not be able to
        do anything else while playing a module.
     
        .MOD files differ from .MID ({MIDI}) files in that they
        contain sound samples.  This allows each song to use different
        sounds but it also puts more load on the {CPU} than playing a
        MIDI file, since more data must be processed for each note.  A
        slow CPU would benefit from a sound card with {wavetable
        synthesis} which handles samples instead of the CPU.
     
        Module files come in various formats including .MOD.  Formats
        evolved from .MOD include .S3M, .FAR and .669.  Most contain
        improvements on .MODs.
     
        {(http://www.eskimo.com/~future/mods.htm)}.
     
        2.  modify or modification.
     
        This abbreviation is very common - in fact the full terms are
        considered formal.  "Mods" is used especially with reference
        to bug fixes or minor design changes in hardware or software,
        most especially with respect to {patch} sets or a {diff}.
     
        3.  A common name for the {modulo} operator.
     
        (1999-07-14)

*MOD
     
        ("StarMOD") A {concurrent} language combining the {module}s of
        {Modula} and the communications of {Distributed Processes}.
     
        ["*MOD - A Language for Distributed Programming", R.P. Cook,
        IEEE Trans Soft Eng SE-6(6):563-571 (Nov 1980)].
     
        [{Jargon File}]
     
        (1994-10-21)