Unipolar /(?)/

U·ni·po·lar

Unipolar

a.
  1. Having, or acting by means of, one pole only. (Physics)
  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.