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touch-tone
or touch·tone
[ tuhch-tohn ]
adjective
- of or relating to a tone-dialing system or a push-button phone operating on tone dialing.
noun
- (sometimes initial capital letter) a tone-dialing system.
- a telephone utilizing this system.
touch-tone
adjective
- 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
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Word History and Origins
Origin of touch-tone1
An Americanism dating back to 1955–60
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