Real Dictionary

induction coil in American English
an apparatus made up of two magnetically coupled coils in a circuit in which interruptions of the direct-current supply to one coil produce a high-voltage alternating current in the other
noun: a transformer for producing high-voltage alternating current from a low-voltage direct current, consisting essentially of two concentric coils with a common soft-iron core, a primary coil with relatively few windings of heavy wire, and a secondary coil wi

induction coil in British English
noun: a transformer for producing a high voltage from a low voltage. It consists of a cylindrical primary winding of few turns, a concentric secondary winding of many turns, and often a common soft-iron core

induction coil in Electrical Engineering
noun: An induction coil is a transformer for producing a high voltage from a low voltage.