the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [adjective] > polar > having one or two poles (2)
Of or pertaining to two poles; having two poles, esp. poles such that the relations of the body or quantity remain the same when it is turned end…
Physics. Of apparatus: having, or operating by means of, a single magnetic pole; (of a generator or motor) involving or employing unipolar…