D defs.my
Entry 1 sense Webster, 1913

Electro-magnetic

· E·lec·tro-mag·net·ic · IPA
01 a. Of or pertaining to electromagnetism.
  1. 1.
    Of or pertaining to electromagnetism. See: electromagnetism
Phrases & compounds
Electro-magnetic engine — an engine in which the motive force is electro-magnetism.
Electro-magnetic theory of light — a theory of light which makes it consist in the rapid alternation of transient electric currents moving transversely to the direction of the ray.