bipolarity

bipolarity (countable and uncountable, plural bipolarities)

1. The state of being bipolar.
   • 2000, David Reynolds, chapter 17, in One World Divisible, W. W. Norton, →ISBN, page 645:

     The 1990s confirmed the United States as the world's sole superpower. Bipolarity had disappeared with the Soviet Union; contrary to predictions, Germany and Japan had not yet turned economic muscle into military might to create a new era of “multipolarity.”