Definition of "bipolar"

(4) the unipolar-bipolar distinction is important in regard to these personality variables; the trait of extraversion (associated as it is with positive affectivity) may mean that individual variation here leads to a more bipolar pattern; ...

1992, Paul Gilbert, Depression: The Evolution of Powerlessness

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, David A. Lake, Patrick M. Morgan, Regional Orders: Building Security in a New World

And today, the world has become more and more bipolar.

2006, Leandro Herrero, The Leader with Seven Faces: finding your own ways to practice leadership in today's organization

And in both visual artists and creative writers, there is a considerably higher risk of affective disorder, more unipolar (depression only) in artists, and more bipolar (mania and depression) in writers, and leading to higher rates of alcoholism and suicide, particularly in writers (Andreasen 1987; DeLong & Aldershof, 1988; Jamison, 1986, 1995).

2005, Barbara E. Bryden, Sundial: Theoretical Relationships Between Psychological Type, Talent, and Disease

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, Robert H. Coombs, editor, Family Therapy Review: Preparing for Comprehensive and Licensing Examinations

If a bipolar person you work with is receiving successful treatment, you might not even know that she is bipolar.

2006, Jon P. Bloch, Jeffrey A. Naser, The everything health guide to adult bipolar disorder