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touch-tone

[tuhch-tohn] /ˈtʌtʃˌtoʊn/
adjective
1.
of or pertaining to a tone-dialing system or a push-button phone operating on tone dialing.
noun
2.
(sometimes initial capital letter) a tone-dialing system.
3.
a telephone utilizing this system.
Also, touchtone.
Origin
1955-1960
1955-60, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for touch tone

touch-tone

adjective
1.
of or relating to a telephone dialling system in which each of the buttons pressed generates a tone of a different pitch, which is transmitted to the exchange
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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10
11
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