power off
Definitions
To shut down or deactivate an electronic device or system.
The act of disconnecting a machine from its source of electrical energy.
Examples
Please remember to power off your computer before you leave the office.
The system will automatically power off if it detects an overheating issue.
You need to power off the device completely to perform a hard reset.
Synonyms
shutdown deactivate turn off switch off power down kill disable