"activating" in the noun sense
1. energizing, activating, activation
the activity of causing to have energy and be active
"activating" in the verb sense
1. trip, actuate, trigger, activate, set off, spark off, spark, trigger off, touch off
put in motion or move to act
"trigger a reaction"
"actuate the circuits"
2. activate
make active or more active
"activate an old file"
3. activate
make more adsorptive
"activate a metal"
4. activate, aerate
aerate (sewage) so as to favor the growth of organisms that decompose organic matter
5. activate
make (substances) radioactive
"activating" in the adjective sense
1. activating, actuating
causing motion or action or change
Source: WordNet® (An amazing lexical database of English)
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