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Definition of bipolar disorder noun from the Oxford Advanced Learner's Dictionary

bipolar disorder

noun
 
/ˌbaɪˈpəʊlə dɪsɔːdə(r)/
 
/ˌbaɪˈpəʊlər dɪsɔːrdər/
(also bipolar affective disorder)
[uncountable, countable]
(also old-fashioned manic depression [uncountable])
(psychology)
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  1. a mental illness in which somebody has periods of time when they feel extremely depressed and tired and other periods when they feel extremely active and excited with a lot of energyTopics Mental healthc2
See bipolar disorder in the Oxford Advanced American Dictionary
previously
adverb
 
 
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