I. “+ noun
Etymology: electr- + magnetism
1. : magnetism developed by a current of electricity
2. : a branch of physical science that deals with the physical relations between electricity and magnetism (as the development of magnetism by an electric current or the effect of magnets upon currents)
II. noun
: a fundamental physical force that is responsible for interactions between charged particles which occur because of their charge and for the emission and absorption of photons, that is about 100 times weaker than the strong force, and that extends over infinite distances but dominates over other forces at atomic and molecular distances — called also electromagnetic force electromagnetic interaction — compare gravity herein strong force herein weak force herein