bipolar disorder

noun

: any of several psychological disorders of mood characterized usually by alternating episodes of depression and mania

called also bipolar illness, manic depression

Examples of bipolar disorder in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Linton had struggled with bipolar disorder for years before the crash and was twice hospitalized due to issues related to her mental illness. James Queally, Los Angeles Times, 8 Sep. 2026 The group was founded by Jan and David Baszucki, whose son Matt was diagnosed with bipolar disorder in college. Kelly Rogers Victor, USA Today, 6 Sep. 2026 Back in December, the actor got candid about his health during an appearance on Maurice Benard’s State of Mind podcast, sharing that he’d been diagnosed with bipolar disorder and had required hospitalization for treatment. Brenton Blanchet, PEOPLE, 2 Sep. 2026 Then there was a very public manic episode in 1996, which was related to bipolar disorder. Jesse Hassenger, Entertainment Weekly, 30 Aug. 2026 See All Example Sentences for bipolar disorder

Word History

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of bipolar disorder was in 1972

Browse Nearby Words

Cite this Entry

“Bipolar disorder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bipolar%20disorder. Accessed 10 Sep. 2026.

Kids Definition

bipolar disorder

noun
: any of several psychological disorders of mood characterized by alternating episodes of depression and mania

Medical Definition

bipolar disorder

noun
: any of several mood disorders characterized usually by alternating episodes of depression and mania

Note: The mania experienced in bipolar disorder may be of the euphoric or irritable type or both.

called also bipolar affective disorder, bipolar illness, manic depression, manic-depressive illness

compare major depressive disorder

More from Merriam-Webster on bipolar disorder

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster