(geography) At a given point, the direction in which the magnetic North Pole of the Earth lies.

(physics) The dependence of any magnetic property of a material on the direction in which it is measured.

(chemistry) A laboratory machine that produces a rotating magnetic field, so that a magnetic stir bar will automatically stir a chemical solution. They often incorporate an electric heating plate.

A method of supporting and transporting objects and vehicles by using a magnetic field to counterbalance the gravitational pull.

(chiefly Canada, US, idiomatic, slang) A person, especially a man, to whom women are attracted.

The magnetization of an igneous rock that was acquired at the time it cooled from the molten state; it provides information on the Earth's magnetic field at that time.

(nautical) Any of several small bar magnets placed and adjusted within a ship's binnacle to correct for the effects of other magnetic influences in the ship.

(physics) A material, or piece of such material, which retains its magnetism even when not subjected to any external magnetic fields.

(military) A line drawn on a map or chart connecting all points at which the magnetic inclination (dip) is zero for a specified epoch.

(physics) The potential energy of a magnetic field.