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Meaning of auto-dialer

au•to-di•al•er

Pronunciation: (ô'tō-dī"u-lur, -dī"lur), [key]
— n.
  1. a telephone device that makes possible a service featurewhereby a call is automatically made in response to a brief input signal from the user, as the pressing of a button. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.