verb, -set, -set⋅ting, adjective, noun | 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. |
| 4. | set in advance: a preset radio adjusted to receive certain stations. |
| 5. | (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. |
| 6. | a knob or button that activates a preset appliance: Just push the preset and coffee will be ready when you get up. |
| 7. | a similar device on a radio that can be activated to tune in a preselected station. |