from the GNU version of the Collaborative International Dictionary of English
- n. 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).
from The Century Dictionary and Cyclopedia
- n. A device for the electric tuning or adjustment to resonance of circuits used in producing and receiving electric oscillations. See syntonism and syntonic.
Sorry, no etymologies found.