activate

To encourage development or induce increased activity; to stimulate.

To put a device, mechanism (alarm etc.) or system into action or motion; to trigger, to actuate, to set off, to enable.

To render more reactive; excite.

To render a molecule reactive, active, or effective in performing its function.

To render a substance radioactive.

To hasten a chemical reaction, especially by heating.

To remove the limitations of demoware by providing a license; to unlock.

To aerate in order to aid decomposition of organic matter.

To organize or create a military unit or station.

To bring a player back after an injury.