Meaning of bipolar disorder

bipo'lar disor'der

Pronunciation: [key]
— Psychiatry. Psychiatry.
  1. an affective disorder characterized by periods of mania alternating with periods of depression, usually interspersed with relatively long intervals of normal mood. Formerly,
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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