| 1. | an extremely powerful nation, esp. one capable of influencing international events and the acts and policies of less powerful nations. |
| 2. | power greater in scope or magnitude than that which is considered natural or has previously existed. |
| 3. | power, esp. mechanical or electric power, on an extremely large scale secured by the linking together of a number of separate power systems, with a view to more efficient and economical generation and distribution. |