[tuhch-tohn] 
| 1. | of or pertaining to a tone-dialing system or a push-button phone operating on tone dialing. |
| 2. | (sometimes initial capital letter ) a tone-dialing system. |
| 3. | a telephone utilizing this system. |
| touch-tone also touch·tone (tŭch'tōn') adj. Of, relating to, or being a telephone with which the user places calls by pressing pushbuttons that generate and transmit tones of differing pitch, these tones corresponding to the digits of the number being called. n. A touch-tone telephone. |