Definition from Wiktionary, the free dictionary
superpower (plural superpowers)
- (Obsolete usage) Electricity generated in a large plant that is tied into a regional network, on a larger scale than was common in the early years of commercial electricity production.
- Excessive or superior power.
- A sovereign state with dominant status on the globe and a very advanced military, especially the Soviet Union or United States.
- A fictional extraordinary physical or mental ability, especially possessed by a superhero or supervillain.