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Meaning of touch-tone

touch-tone

Pronunciation: (tuch'tōn"), [key]
— adj.
  1. of or pertaining to a tone-dialing system or a push-button phone operating on tone dialing.
—n.
  1. (sometimes cap.) a tone-dialing system.
  2. a telephone utilizing this system.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.