Definition of "unipolar" []

• Having, acting by means of, or produced by a single magnetic or electric pole. (adjective)
• Biology Having a single fibrous process. Used of a neuron. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Those were the experiences we have had to live through up until today's world, which we call a unipolar world."
• "They could not achieve that goal in 2000 when Yasser Arafat was ruling over a unified Palestinian camp, when a relatively moderate political figure was serving as Israel's PM -- and at a time when the U.S. was at the peak of its so-called unipolar moment and Iran, Hizbollah and Hamas were having great difficulties in trying to exert their influence."
• "In the preface to a sweeping defense review released Saturday, Australian Defense Minister Joel Fitzgibbon writes: "The biggest changes to our outlook ... have been the rise of China, the emergence of India and the beginning of the end of the so-called unipolar moment; the almost two-decade-long period in which the pre-eminence of our principal ally, the United States, was without question.""