activate

 
Pronunciation: /ˈaktɪveɪt/

verb

[with object]
  • make (something) active or operative: fumes from cooking are enough to activate the alarm
  • convert (a substance, molecule, etc.) into a reactive form: a DNA-repair enzyme that is activated by visible light (as adjective activated) activated chlorine

Derivatives

activation

Pronunciation: /-ˈveɪʃ(ə)n/
noun

activator

noun