ETYM Pref. bi- + polar. Related to Dipolar.
1. Having two opposite states, such as positive and negative.
2. In information transfer and processing, pertaining to or characteristic of a signal in which opposite voltage polarities represent on and off, true and false, or some other pair of values. See also nonreturn to zero. Compare unipolar.
3. In electronics, pertaining to or characteristic of a transistor having two types of charge carriers. See also transistor.
4. Having or pertaining to two poles; occurring in both polar regions; equidistant north and south of equator.
Having two poles.