Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Relating to or having two poles or charges.
  • adj. Relating to a device capable of using two polarizations, such as a transistor that uses positive and negative charge carriers.
  • adj. Relating to or involving both of the earth's polar regions.
  • adj. Having two opposite or contradictory ideas or natures: the bipolar world of the postwar period.
  • adj. Biology Having two poles or opposite extremities: a bipolar neuron.
  • adj. Psychology Relating to a major affective disorder that is characterized by episodes of mania and depression.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Involving both extremes (poles) at the same time.
  • adj. Relating to or having bipolar disorder.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Doubly polar; having two poles.

from The Century Dictionary and Cyclopedia

  • Doubly polar; having two poles.
  • Specifically In anatomy, having two processes from opposite poles: said of certain nervecells.
  • In electricity, pertaining to an electric machine having two poles.
  • In zoology, occurring in the north and south polar regions, but not in the intervening tropical ocean. See extract under bipolarity, 2.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of or relating to manic depressive illness
  • adj. having two poles
  • adj. of, pertaining to, or occurring in both polar regions

Etymologies

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