A state, a church, or other organization which exercises power in every part of the world or among all mankind.(noun)
The Century Dictionary (Public Domain)
Use "world-power" in a sentence
"It will then be time to sign a pact of friendship with the remaining world-power, in preparation for another attack."
"In the UK, the post-war continuation of food rationing ought to have been a strong clue that one was not living in a world-power country."
"I mean, he brought the German economy back from out-of-control inflation, he kept crime down on his own soil, and sent Germany to industrial world-power in a matter of a few years."