A mental disorder marked by alternating periods of elation and depression. Also called (especially formerly) manic depression. Compare with unipolar.
More example sentences
- Signs of chronic mental illnesses such as bipolar disorder or schizophrenia may first show up in childhood.
- Like every other mental ailment, bipolar disorder is treated through medication and counseling.
- Patients with chronic severe depressive and anxiety disorders, psychotic disorders, and bipolar disorders are particularly in need of specialty consultation and management.
Definition of bipolar disorder in:
- The British & World English dictionary