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Dictionary definition for: Activate

1. (v) put in motion or move to act; "trigger a reaction" "actuate the circuits"

2. (v) make active or more active; "activate an old file"

3. (v) make more adsorptive; "activate a metal"

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

5. (v) make (substances) radioactive

WordNet 2.1 Copyright Princeton University. All rights reserved.