say it: AK-tuh-vay-ting
activating is a noun and adjective meaning "the activity of causing to have energy and be active". It carries 2 recorded senses.
the activity of causing to have energy and be active
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for activating come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.