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diagram
diagrammatic
diagraph
diakinesis
dial
dial.
dial-a-ride
dial gauge
dial tone
dial-up
dialect
dialectic
dialectical
dialectical materialism
dialectics
dialectology
dialed
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World English Dictionary
Dictionnaire Français

dial tone
di·al tone (plural di·al tones)


noun 
Definition:
 
North America telephone sound: a continuous sound that you hear when you lift a telephone receiver. It indicates that a number can be dialed.
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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