manic depression(n = noun.state) bipolar disorder, manic-depressive psychosis, manic depressive illness - a mental disorder characterized by episodes of mania and depression;
is a kind of affective disorder, emotional disorder, emotional disturbance, major affective disorder
has particulars: cyclic disorder, cyclothymia, cyclothymic disorder

agitated depression, anaclitic depression, clinical depression, depression, dysthymic depression, endogenous depression, exogenous depression, great depression, involutional depression, manic, manic depressive, manic depressive illness, manic disorder, natural depression, neurotic depression, psychotic depression, reactive depression, retarded depression, unipolar depression