Meaning of the word activated in English

What does activated mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

activated

US /ˈæk.tɪ.veɪ.tɪd/
UK /ˈæk.tɪ.veɪ.tɪd/

Adjective

made active or operative; switched on

Example:
The alarm system was activated by the intruder.
The emergency brakes are activated automatically.