(DTMF, or “touch-tone”) A method used by the telephone system to communicate the keys pressed when dialling. Pressing a key on the phone’s keypad generates two simultaneous tones, one for the row and one for the column. These are decoded by the exchange to determine which key was pressed.
[dweyn, doo-eyn] /dweɪn, duˈeɪn/ noun 1. a male given name.
[doo-ahr-kee, dyoo-] /ˈdu ɑr ki, ˈdyu-/ noun, plural duarchies. 1. a government or form of government in which power is vested equally in two rulers.
[dwahr-tee] /ˈdwɑr ti/ noun 1. a city in SW California.
/djuːˈæθlɒn/ noun 1. an athletic contest in which each athlete competes in running and cycling events