| a. | 1. | Forming, or consisting of, a large mass; compacted; weighty; heavy; massy. | |||
| 2. | (Min.) In mass; not necessarily without a crystalline structure, but having no regular form;
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| Adj. | 1. | massive - imposing in size or bulk or solidity; "massive oak doors"; "Moore's massive sculptures"; "the monolithic proportions of Stalinist architecture"; "a monumental scale" Synonyms: monolithic, monumental |
| 2. | massive - being the same substance throughout; "massive silver" | |
| 3. | massive - imposing in scale or scope or degree or power; "massive retaliatory power"; "a massive increase in oil prices"; "massive changes" | |
| 4. | massive - consisting of great mass; containing a great quantity of matter; "Earth is the most massive of the terrestrial planets" |