- Present participle of activate.
Variant of activate
transitive verbactivated, activating
- to make active; cause to engage in activity
- to put (an inactive military unit) on an active status by assigning personnel, equipment, etc. to it
- to make radioactive
- to make capable of reacting or of accelerating a chemical reaction
- to treat (sewage) with air so that aerobes will become active in it, thus purifying it