Breadcrumb Home > Dictionary > Index B bipolar disorder: Meaning and Definition of Find definitions for: bipo'lar disor'der Pronunciation: [key] — Psychiatry. Psychiatry. an affective disorder characterized by periods of mania alternating with periods of depression, usually interspersed with relatively long intervals of normal mood. Formerly, Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bipolar bippy TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language