activate

verb

2.
make active or more active
Antonym:
inactivate
3.
make more adsorptive
Derived from:
activation
By means of:
activation
4.
aerate (sewage) so as to favor the growth of organisms that decompose organic matter
Derived from:
activation
By means of:
activation
5.
make (substances) radioactive
Derived from:
activation
By means of:
activation