What does Bipolar disorder mean?

Bipolar disorder meaning in Medical Dictionary

A mood condition sometimes known as manic-depressive infection or manic-depression that characteristically requires rounds of depression and elation or mania. Often the mood switches from high to reduced and again are remarkable and rapid, but more frequently they've been gradual and sluggish, and intervals of regular mood might occur between the large (manic) and reduced (depressive) levels associated with the condition. Signs and symptoms of both the depressive and manic rounds can be serious and sometimes trigger impaired performance.

Bipolar disorder meaning in General Dictionary

a psychological disorder characterized by symptoms of mania and depression