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tone dialing

American

noun

a system of calling telephone numbers wherein tones of differing pitch corresponding to the digits in the number called are electronically generated by manipulating pushbuttons (contrasted with pulse dialing).

Other Word Forms

tone-dialing

adjective

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.