Activate
WordNet
verb
(1) Make active or more active
"Activate an old file"
(2) Make (substances) radioactive
(3) Aerate (sewage) so as to favor the growth of organisms that decompose organic matter
(4) Make more adsorptive
"Activate a metal"
(5) Put in motion or move to act
"Trigger a reaction"
"Actuate the circuits"