| 1. | having a wide range or extent; comprehensive; extensive: expansive mountain scenery. |
| 2. | (of a person's character or speech) effusive, unrestrained, free, or open: Our expansive host welcomed us warmly. |
| 3. | tending to expand or capable of expanding. |
| 4. | causing expansion: the expansive force of heat. |
| 5. | working by expansion, as an engine. |
| 6. | Psychiatry. marked by an abnormal euphoric state and by delusions of grandeur. |