Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “bipolar disorder”

bipolar disorder

noun [U] uk   /baɪˈpəʊ.lə.dɪˌsɔː.dər/ us    /-ˈpoʊ.lɚ.dɪˌsɔːr.dɚ/
a mental illness causing someone to change often from being extremely excited to being very depressedMental and psychiatric disorders
(Definition of bipolar disorder from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of bipolar disorder?
Browse related topics

You are looking at an entry to do with Mental & psychiatric disorders, but you might be interested in these topics from the Psychology, psychiatry, & psychoanalysis topic area:

Add Cambridge dictionaries to your browser to your website

Translations of “bipolar disorder”

Word of the Day

knack

a skill or an ability to do something easily and well

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More