American English
/ˌæk.təˈveɪ.ʃn̩/
4 syllables · Stress the third syllable.
The process of making a device, service, account, or feature ready to use.
Practice out loudThe process of making a device, service, account, or feature ready to use.
You need an activation code to use the app.
The phone is ready after activation.
activation code · activation link · account activation · product activation
activation of + noun
something requires activation
The process of making a physical, biological, or chemical system become active.
The exercise improves muscle activation.
The drug causes the activation of immune cells.
muscle activation · cell activation · neural activation
activation of + noun
noun + activation
The energy needed to start a chemical reaction.
Heat provides the activation energy for the reaction.