[1] : The Collaborative International Dictionary of English v.0.48

syntony \syn"tony\, 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.
   webster 1913 suppl.
see also:
syn- tone 

Syntony >> S Words
Syntony, definition of term: Syntony
syntony_pag1.html