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Houghton Mifflin

bi·po·lar  audio  (b-plr) KEY 

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


OTHER FORMS:
bipo·lari·ty  (-lr-t) KEY (Noun)


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