n. A small electric generator with an armature rotating in a magnetic field, having a secondary winding that generates a high voltage, such as one used to generate a voltage sufficient to cause a spark to jump between the poles of a spark plug in an internal-combustion engine. [ WordNet 1.5 ]

pref. [ See Magnet. ] A prefix meaning pertaining to, produced by, or in some way connected with, magnetism. [ 1913 Webster ]

{ } a. (Physics) Pertaining to, or characterized by, electricity by the action of magnets; as, magneto-electric induction. [ 1913 Webster ]

Magneto-electric machine, a form of dynamo-electric machine in which the field is maintained by permanent steel magnets instead of electro-magnets. [ 1913 Webster ]

n. 1. Electricity evolved by the action of magnets. [ 1913 Webster ]

2. (Physics) That branch of science which treats of the development of electricity by the action of magnets; -- the counterpart of electro-magnetism. [ 1913 Webster ]

n. [ Magneto- + -graph. ] (Physics) An automatic instrument for registering, by photography or otherwise, the states and variations of any of the terrestrial magnetic elements. [ 1913 Webster ]

n. The study of the interaction of magnetic fields with electrically conductive fluids, such as a plasma or a molten metal. [ WordNet 1.5 ]

n. [ Magneto- + -meter: cf. F. magnétomètre. ] (Physics) 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. [ 1913 Webster ]

a. Pertaining to, or employed in, the measurement of magnetic forces; obtained by means of a magnetometer; as, magnetometric instruments; magnetometric measurements. [ 1913 Webster ]

a. [ Magneto- + motive, a. ] (Elec.) Pertaining to, or designating, a force producing magnetic flux, analogous to electromotive force, and equal to the magnetic flux multiplied by the magnetic reluctance. [ Webster 1913 Suppl. ]

n. The force that produces magnetic flux. [ WordNet 1.5 ]

n. A voltaic series of two or more large plates, producing a great quantity of electricity of low tension, and hence adapted to the exhibition of electro-magnetic phenomena. [ R. ] [ 1913 Webster ]

n. A unit of magnetic moment for a subatomic particle, atom, or molecule. [ WordNet 1.5 ]

n. the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic field. [ WordNet 1.6 ]

n. (Med.) The treatment of disease by the application of magnets to the surface of the body. [ 1913 Webster ]