Syntonizer

Syn´to`niz`er


n.1.(Physics) One that syntonizes; specif., a device consisting essentially of a variable inductance coil and condenser with a pair of adjustable spark balls, for attuning the time periods of antennæ in wireless telegraphy (called also syntonizing coil).
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.