activate

verb

1. 1

   make active or more active

   activate an old file

2. 2

   make (substances) radioactive

3. 3

   aerate (sewage) so as to favor the growth of organisms that decompose organic matter

4. 4

   make more adsorptive

   activate a metal

5. 5

   put in motion or move to act

   trigger a reaction

   actuate the circuits