'syntonizing coil' definitions:

Definition of 'syntonizing coil'

From: GCIDE

Syntonizer \Syn"to*niz`er\, n. (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 antennae in wireless telegraphy (called also {syntonizing coil}). [Webster 1913 Suppl.]