Verb
-
make (substances) radioactive
-
aerate (sewage) so as to favor the growth of organisms that decompose organic matter
-
make more adsorptive
"activate a metal"
-
make active or more active
"activate an old file"
-
put in motion or move to act
"trigger a reaction"
"actuate the circuits"
- set off - spark off - trigger off - touch off