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Definition of: ACTIVATED

Aerate (sewage) so as to favor the growth of organisms that decompose organic matter
Make more adsorptive; "activate a metal"
Put in motion or move to act; "trigger a reaction"; "actuate the circuits"
(military) set up and placed on active assignment; "a newly activated unit"
Rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive
(of e.g. a molecule) made reactive or more reactive
(of sewage) treated with aeration and bacteria to aid decomposition
Make active or more active; "activate an old file"
Make (substances) radioactive