lim·it·er \ˈlimə̇d.ə(r), -ə̇tə-\noun (-s) Etymology: alteration (influenced by -er) of Middle English limitour, from limiten to limit + -our -or : one that limits < continue to rely on competition as the principal limiter of private economic power — E.S.Mason > as a.: current limiter b.: an electronic device for limiting a train of electrical oscillations to a uniform prescribed amplitude