bipolar UK /baɪˈpəʊ.lə/US /baɪˈpoʊ.lɚ/adjective 5noun 2forms 3 adjective5 •Involving or having both extremes or poles at the same time.Pakistan greatly resents this, but its efforts to adjust the complex have involved trying to make it more bipolar (via nuclear weapons), and not to move to another security order. — 1997 •Relating to or having bipolar disorder.Since many childhood depressions become more bipolar in adult life, and because Jay's father was bipolar, I added Depakote to "protect" him against this bipolar possibility. — 2005 •Of or relating to an international system in which two states wield most of the cultural, economic, and political influence. •Relating to both polar regions. •Relating to a bipole. noun2 •A bipolar cell. •Ellipsis of bipolar disorder.[R]ecent meta-analyses have shown asthma, obesity, migraine and head injury are associated with bipolar. — 2018 formsbipolars · more bipolar · most bipolar