[ sahy-kluh-thahy-mee-uh, sik-luh- ]
/ ˌsaɪ kləˈθaɪ mi ə, ˌsɪk lə- /

noun Psychiatry.

a mild bipolar disorder characterized by instability of mood and a tendency to swing between mild euphorias and depressions.

Origin of cyclothymia

First recorded in 1920–25; cyclo- + -thymia

Related forms

cy·clo·thy·mic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cyclothymia


/ (ˌsaɪkləʊˈθaɪmɪə, ˌsɪk-) /


psychiatry a condition characterized by periodical swings of mood between excitement and depression, activity and inactivitySee also manic-depressive

Derived Forms

cyclothymic or cyclothymiac, adjective, noun
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

Medicine definitions for cyclothymia


[ sī′klə-thīmē-ə ]


A mild mood disorder characterized by alternating periods of elation and depression.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.