A system of musical composition devised by Arnold Schoenberg, as a method of composing with twelve notes which are related solely to each other.

(US, telephony) A system of telephone dialing in which each digit is transmitted as a tone or combination of tones of specific pitch.

(Britain) Alternative spelling of touch-tone dialing

plural of non-harmonic tone

(music) a note that is played or sung between two chords that is not a part of either chord

(music) a scale with intervals of only whole steps

plural of whole-tone scale

(dated) The provision of interactive video services, such as home shopping and films transmitted on demand, by traditional telecommunication networks.

(phonology) In autosegmental phonology, a segment, usually a syllable nucleus, which can be associated with a tone.

plural of tone-bearing unit