Pronunciation: (bī-pō'lur), [key]
1. having two poles, as the earth.
2. of, pertaining to, or found at both polar regions.
3. characterized by opposite extremes, as two conflicting political philosophies.
4. Electronics.of or pertaining to a transistor that uses both positive and negative charge carriers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.