1. the action or process of tuning something: "an electronic instrument requires no tuning"
▪ the extent to which a musical instrument, performance, or ensemble is in tune: "at times the tuning is uncertain, and the solos often lack conviction"
▪ a particular key or set of pitches to which an instrument, especially one with strings, is tuned: "E-flat tuning"
▪ the facility on a radio allowing for the reception of different stations, frequencies, or wavelengths: "he fiddled with the tuning"
▪ the variation of the resonant frequency of an oscillatory circuit.