noun

• (countable) A sovereign state with dominant status on the globe and a very advanced military, especially the United States or formerly the Soviet Union.
  "Our superpower competition will be reunified Germany (perhaps together with its European satellites) and expanding Japan (perhaps allied with China, if they can bring that off)."
• (countable, originally fiction) An extraordinary physical or mental ability, especially possessed by a superhero or supervillain.
  "Administered in such a way, in that superpowers it assures."
• (obsolete, uncountable) 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.
• (mathematics) A tetration.

verb

• (transitive) To give extraordinary powers to.