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.
Of the roughly 63 million caregivers in the United States, 23% help someone with a mental health problem such as depression, bipolar disorder or schizophrenia. Kat McGowan, NPR, 31 Dec. 2025 Nord and her colleagues have found that people with a range of psychiatric disorders, including bipolar disorder, anxiety, major depression, anorexia and schizophrenia, share unusual activity in a brain region known as the mid-insula, which is essential to interpreting signals from the body. The New York Times News Service Syndicate, San Diego Union-Tribune, 30 Dec. 2025 Soon after, she was diagnosed with bipolar disorder, leading her to become an advocate for mental health awareness. Jordana Comiter, PEOPLE, 27 Dec. 2025 People with anxiety and mood disorders, including bipolar disorder and major depressive disorder, may periodically have symptoms that interfere with their ability to do their jobs. Emily Rosado-Solomon, The Conversation, 15 Dec. 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 3 Jan. 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

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