1
: the face of a sundial
2
obsolete
: timepiece
3
: the graduated face of a timepiece
4
a
: a face upon which some measurement is registered usually by means of graduations and a pointer
the thermometer dial reads 70°F
b
: a device that may be operated to make electrical connections or to regulate the operation of a machine
a radio dial
a telephone dial
dialed or dialled; dialing or dialling
1
: to measure with a dial
2
a
: to manipulate a device (such as a dial) so as to operate, regulate, or select
dial your favorite program
dialed the wrong number
b
: call sense 1m(1)
dialed the office
1
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Merriam-Webster unabridged
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