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Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   massive
       adj 1: imposing in size or bulk or solidity; "massive oak
              doors"; "Moore's massive sculptures"; "the monolithic
              proportions of Stalinist architecture"; "a monumental
              scale" [syn: massive, monolithic, monumental]
       2: being the same substance throughout; "massive silver"
       3: imposing in scale or scope or degree or power; "massive
          retaliatory power"; "a massive increase in oil prices";
          "massive changes"
       4: consisting of great mass; containing a great quantity of
          matter; "Earth is the most massive of the terrestrial
          planets"