1. to make something active again after it has been inactive or dormant
Usage: third person singular present tense of ‘reactivate’

Examples

• The doctor reactivates the patient’s dormant account in the system.
• The software automatically reactivates after the trial period expires.
• Heat reactivates the chemical reaction in the mixture.
• The company reactivates old customer accounts during the promotion.
• The virus reactivates when the immune system is weakened.
• She reactivates her gym membership every January.
• The alarm system reactivates itself after being temporarily disabled.