Definition of power down phrasal verb from the Oxford Advanced Learner's Dictionary

 

power down

 phrasal verb
phrasal verb
 
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Phrasal Verbs

power down

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power somethingdown

(also power off, power somethingoff)
 
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to stop a machine, especially a computer, by turning off the electricity supply We were told to power down at 9.45. Log off or power down your system. Do not power off or reboot in the middle of the update. Power off your PC. opposite power somethingup related noun power-down

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