D defs.my
Entry 2 senses Webster, 1913

Unipolar

· U·ni·po·lar · IPA
01 a. Having, or acting by means of, one pole only.
  1. 1.
    Having, or acting by means of, one pole only.(Physics)
  2. 2.
    Having but one pole or process; -- applied to those ganglionic nerve cells which have but one radiating process; -- opposed to multipolar.(Anat.)
Phrases & compounds
Unipolar induction — induction, as in a conducting circuit, by only one pole of a magnet.
Unipolar stimulation — the simulation sometimes produced when one electrode of an induction apparatus is applied to a nerve; -- called also unipolar induction action.