Adjective
1. imposing in size or bulk or solidity;
"massive oak doors""Moore's massive sculptures""the monolithic proportions of Stalinist architecture""a monumental scale"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"