1 tending to depress; causing depression
2 (Psychol) tending to be subject to periods of depression See also →
bipolar manic-depressive disorder , bipolar syndrome
n See →
1 denoting a mental disorder characterized either by an alternation between extreme euphoria and deep depression (bipolar manic-depressive disorder or syndrome) or by depression on its own or (rarely) by elation on its own (unipolar disorder)
2 a person afflicted with this disorder
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