Definitions from Wiktionary ( )

▸ verb:  (transitive) To encourage development or induce increased activity; to stimulate.
▸ verb:  (transitive) To put a device, mechanism (alarm etc.) or system into action or motion; to trigger, to actuate, to set off, to enable.
▸ verb:  (transitive, chemistry, physics) To render more reactive; excite.
▸ verb:  (transitive, biology) To render a molecule reactive, active, or effective in performing its function.
▸ verb:  (transitive, physics) To render a substance radioactive.
▸ verb:  (transitive, chemistry) To hasten a chemical reaction, especially by heating.
▸ verb:  (transitive, computing, software) To remove the limitations of demoware by providing a license; to unlock.
▸ verb:  (transitive) To aerate in order to aid decomposition of organic matter.
▸ verb:  (transitive, military) To organize or create a military unit or station.
▸ verb:  (transitive, sports) To bring a player back after an injury.

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