Pronunciation: ( —v., adj.prē-set'; —n.prē'set"),[key] —v.,-set, -set•ting, —adj., n.
—v.t. 1. to set beforehand.
2. to set (an electric or electronic appliance) to become activated at a designated time: We preset the coffeemaker to go on at 6 a.m.
3. to adjust (a connector, switch, or the like) so that when activated it will perform a designated function: The tuning buttons on the radio are preset to my favorite FM stations.
—adj. 1. set in advance: a preset radio adjusted to receive certain stations. 2. (of the guidance system of a missile or the course of flight it determines) set before launching to reach a specific destination without any alteration in response to signals from the ground.
—n. 1. a knob or button that activates a preset appliance: Just push the preset and coffee will be ready when you get up. 2. a similar device on a radio that can be activated to tune in a preselected station.