a. [ Uni- + polar. ] 1. (Physics) Having, or acting by means of, one pole only. [ 1913 Webster ]

2. (Anat.) Having but one pole or process; -- applied to those ganglionic nerve cells which have but one radiating process; -- opposed to multipolar. [ 1913 Webster ]

Unipolar induction (Elec.), induction, as in a conducting circuit, by only one pole of a magnet. --
Unipolar stimulation (Physiol.), the simulation sometimes produced when one electrode of an induction apparatus is applied to a nerve; -- called also unipolar induction action. Du Bois-Reymond. [ 1913 Webster ]