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