superpower definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- power that is superior or very great
- any of the few top world powers competing with one another for international influence
superpower definition by American Heritage Dictionary
A powerful and influential nation, especially a nuclear power that dominates its allies or client states in an international power bloc.