(presetting; past and past participle preset)with obj.［usu. as adj. preset］
- set or adjust (a value that controls the operation of a device) in advance of its use预先设定; 预先调整：
the water is heated quickly to a preset temperature.
水很快被加热到预定的温度。
- a control on electronic equipment that is set or adjusted beforehand to facilitate use（电子设备的）预调装置。