Source : Webster's Revised Unabridged Dictionary (1913)

Override \O`ver*ride"\, v. t. [imp. {Overrode}; p. p.
   {Overridden}, {Overrode}, {Overrid}; p. pr. & vb. n.
   {Overriding}.] [AS. offer[=i]dan.]
   1. To ride over or across; to ride upon; to trample down.

            The carter overridden with [i. e., by] his cart.
                                                  --Chaucer.

   2. To suppress; to destroy; to supersede; to annul; as, one
      low overrides another; to override a veto.

   3. To ride beyond; to pass; to outride. [Obs.]

            I overrode him on the way.            --Shak.

   4. To ride too much; to ride, as a horse, beyond its
      strength.

Source : WordNet®

overriding
     adj : having superior power and influence; "the predominant mood
           among policy-makers is optimism" [syn: {paramount}, {predominant},
            {predominate}, {preponderant}, {preponderating}]

Source : Free On-Line Dictionary of Computing

overriding
     
         Redefining in a {child class} a {method} or
        function member defined in a {parent class}.
     
        Not to be confused with "{overloading}".
     
        (1996-12-21)