CYCLOTHYMIA Meaning of CYCLOTHYMIA in English [ ˌsʌɪklə(ʊ)'θʌɪmɪə ]■ noun Psychiatry, dated manic-depressive tendency.Derivativescyclothymic adjective Origin1920s: from cyclo- + Gk thumos 'temper'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004