Source : Webster's Revised Unabridged Dictionary (1913)

Reliability \Re*li`a*bil"i*ty\ (r?-l?`?-b?l"?-t?), n.
   The state or quality of being reliable; reliableness.

Source : WordNet®

reliability
     n : the trait of being dependable or reliable [syn: {dependability},
          {dependableness}, {reliableness}] [ant: {undependability},
          {undependability}, {undependability}, {undependability}]

Source : Free On-Line Dictionary of Computing

reliability
     
         An attribute of any system that consistently produces
        the same results, preferably meeting or exceeding its
        specifications.  The term may be qualified, e.g {software
        reliability}, {reliable communication}.
     
        Reliability is one component of {RAS}.
     
        (2000-08-13)