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
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Court filings in 2023 civil commitment proceedings say Murdock had been diagnosed with bipolar disorder. Mara H. Gottfried, Twin Cities, 29 Sep. 2025 After Teefey split from Gomez’s father, she was diagnosed, first with bipolar disorder and later with ADHD and PTSD. Martha Ross, Mercury News, 29 Sep. 2025 In a clip taken by a guest, Anwar — who recently wrote an essay about her struggle with bipolar disorder — listened and didn’t judge. Madeleine Marr, Miami Herald, 25 Sep. 2025 During one such episode, Klinkamon sought help for her daughter, who was eventually diagnosed with schizoaffective bipolar disorder. Ishani Desai, Sacbee.com, 23 Sep. 2025 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

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Cite this Entry

“Bipolar disorder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bipolar%20disorder. Accessed 4 Oct. 2025.

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

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