1. Electricity evolved by the action of magnets.

2. (Physics)

Defn: That branch of science which treats of the development of electricity by the action of magnets; — the counterpart of electro- magnetism.

MAGNETOGRAPH
Mag*net"o*graph, n. Etym: [Magneto- + -graph.] (Physics)

Defn: An automatic instrument for registering, by photography or otherwise, the states and variations of any of the terrestrial magnetic elements.

MAGNETOMETER
Mag`net*om"e*ter, n. Etym: [Magneto- + -meter: cf. F. magnétomètre.]
(Physics)

Defn: An instrument for measuring the intensity of magnetic forces; also, less frequently, an instrument for determining any of the terrestrial magnetic elements, as the dip and declination.

MAGNETOMETRIC
Mag`net*o*met"ric, a.

Defn: Pertaining to, or employed in, the measurement of magnetic forces; obtained by means of a magnetometer; as, magnetometric instruments; magnetometric measurements.

MAGNETOMOTIVE
Mag`net*o*mo"tive, a. [Magneto-+ motive, a.] (Elec.)