a. [f. ELECTRO- + DYNAMIC; cf. hydrodynamic.] Pertaining to the force excited by one magnetic current upon another. Hence Electrodynamical a., in same sense. Electrodynamics, the dynamics of electricity; the science of the mutual influence of electric currents. Electrodynamism [see DYNAMISM] = electrodynamics. Electrodynamometer [see DYNAMOMETER], an instrument for measuring electrodynamic force.
1832. Nat. Phil., II. Electro-Magnet, xii. § 291. 90 (Usef. Knowl. Soc.). An electro-dynamic ring.
1881. Sir W. Armstrong, in Nature, No. 619. 451. Electrodynamic machine.
1830. Sir J. Herschel, Stud. Nat. Phil., 324. Theory … developed by M. Ampere, under the name of Electro-dynamics.
1870. R. Ferguson, Electr., 171. Electrodynamics treats of the mutual attractions and repulsions of currents on currents, and currents on magnets.
1876. Catal. Sci. App. S. Kens., 200. Electro-dynamometer, for measuring electric currents which are constantly being reversed in direction.
