activate
/ˈæktɪveɪt/
verb
- To make something start working or become active.
- You need to activate your new credit card by calling the bank.
- Press the button to activate the alarm system.
- The coach's speech activated the team's fighting spirit.
- To turn on or start a device, machine, or system.
- She activated the sprinklers when she saw smoke.
- He activated the GPS on his phone to find the nearest gas station.
- The security guard activated the metal detector at the entrance.
- To make a chemical or biological process begin.
- Sunlight activates vitamin D production in the skin.
- Enzymes in the stomach help activate digestion.
- The scientist added a catalyst to activate the reaction.
Antonyms