an affective disorder characterized by periods of mania alternating with periods of depression, usually interspersed with relatively long intervals of normal mood.
Formerly manic-depressive illness.
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bipolar affective disorder or bipolar syndrome
a mental health problem characterized by an alternation between extreme euphoria and deep depression
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Any of several mood disorders usually characterized by alternating periods of depression with mania or hypomania.manic-depressive illness
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Any of several mood disorders usually characterized by periods of depression that alternate with mania.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Also known as manic-depressive illness. This psychiatric disorder is marked by periods of euphoric (manic) highs often followed by periods of depression.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.