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[ak-tuh-veyt] /ˈæk təˌveɪt/

verb (used with object), activated, activating.
to make active; cause to function or act.

to aerate (sewage) in order to accelerate decomposition of impure organic matter by microorganisms.

to place (a military unit or station) on an active status in an assigned capacity.
verb (transitive)
to make active or capable of action
(physics) to make radioactive

(physiol) to prepare by arousal (the body or one of its organs (e.g. the brain)) for action
to purify (sewage) by aeration
(US, military) to create, mobilize, or organize (a unit)

1620s; see active + -ate (2). Related: Activated; activating.


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