What does Boxing Day have to do with boxing?
1650s, from Latin inductor, agent noun from past participle stem of inducere (see induce). Electromagnetic sense begins in 1837.
inductor in·duc·tor (ĭn-dŭk'tər)n.
Something that inducts, especially a device that functions by or introduces inductance into a circuit.
An electrical component or circuit, especially an induction coil, that introduces inductance into a circuit.
A substance that causes an induced reaction. Unlike a catalyst, an inductor is irreversibly transformed in the reaction.