Source : Webster's Revised Unabridged Dictionary (1913)

Mundane \Mun"dane\, a. [L. mundanus, fr. mundus the world, an
   implement, toilet adornments, or dress; cf. mundus, a.,
   clean, neat, Skr. ma[.n][dsdot] to adorn, dress,
   ma[.n][dsdot]a adornment. Cf. {Monde}, {Mound} in heraldry.]
   Of or pertaining to the world; worldly; earthly; terrestrial;
   as, the mundane sphere. -- {Mun"dane*ly}, adv.

         The defilement of mundane passions.      --I. Taylor.

Source : WordNet®

mundane
     adj 1: found in the ordinary course of events; "a placid everyday
            scene"; "it was a routine day"; "there's nothing quite
            like a real...train conductor to add color to a
            quotidian commute"- Anita Diamant [syn: {everyday}, {quotidian},
             {routine}, {unremarkable}, {workaday}]
     2: concerned with the world or worldly matters; "mundane
        affairs"; "he developed an immense terrestrial
        practicality" [syn: {terrestrial}]
     3: belonging to this earth or world; not ideal or heavenly;
        "not a fairy palace; yet a mundane wonder of unimagined
        kind"; "so terrene a being as himself" [syn: {terrene}]

Source : Free On-Line Dictionary of Computing

mundane
     
         Someone outside some group that is implicit from the
        context, such as the computer industry or science fiction
        fandom.  The implication is that those in the group are
        special and those outside are just ordinary.
     
        (2000-07-22)