The Collaborative International Dictionary
Syntony
Syntony \Syn"to*ny\, n. [Cf. Gr. ? agreement. See Syn-; Tone.] (Physics) State of being adjusted to a certain wave length; agreement or tuning between the time period of an apparatus emitting electric oscillations and that of a receiving apparatus, esp. in wireless telegraphy.
Wiktionary
syntony
n. 1 (context electronics English) A condition in which two oscillators have the same resonant frequency. 2 A syntonic state.