WordReference Random House Unabridged Dictionary of American English © 2025
syn•ton•ic
(sin ton′ik),USA pronunciation adj.
syn•ton′i•cal•ly, adv.
- Electricity, Physicsadjusted to oscillations of the same or a particular frequency.
- Psychiatryof or denoting a personality characterized by normal emotional responsiveness to the environment.
- Greek sýnton(os) attuned to, literally, stretched together (verbid of synteínein to harmonize, equivalent. to syn- syn- + ton- (derivative of teínein to stretch; see tone) + -os adjective, adjectival suffix) + -ic
- 1890–95
'syntonic' also found in these entries (note: many are not synonyms or translations):