ETYM Late Lat. dialis daily, from Latin dies day. Related to Deity.
1. A disc on a telephone that is rotated a fixed distance for each number called; SYN. telephone dial.
2. The circular graduated indicator on various measuring instruments.
3. The control on a radio or television set that is used for tuning.
4. The face of a timepiece; graduated to show the hours.
sundial / sʌndaɪl /
Indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial.
Instrument measuring time by means of a shadow cast by the Sun. Almost completely superseded by the proliferation of clocks, it survives ornamentally in gardens. The dial is marked with the hours at graduated distances, and a style or gnomon (parallel to Earth's axis and pointing to the north) casts the shadow.