<p><strong>Adjective:</strong></p><ul><li>Having two poles, as the earth.</li><li>Of, relating to, or found at both polar regions.</li><li>Characterized by opposite extremes, as two conflicting political philosophies.</li><li>Of or relating to a transistor that uses both positive and negative charge carriers.</li><li>Of, relating to, or having bipolar disorder: His wife is bipolar.</li></ul>