1a component in an electric or electronic circuit which possesses inductance.
2a substance that promotes an equilibrium reaction by reacting with one of the substances produced.
Origin:
mid 17th century (in the sense 'a person who inducts or initiates'): from late Latin, from Latin inducere(see induce), or from induct+ -or1. Current senses date from the early 20th century
inductor in other Oxford dictionaries
Definition of inductor in the US English dictionary