reactivate

/riˈæktɪˌveɪt/
verb
  1. To make something active or functional again after a period of inactivity.
    • You can reactivate your gym membership online with just a few clicks.
    • The IT department helped me reactivate my email account after I forgot the password.
    • The company plans to reactivate the old factory next year.
  2. To bring a person or group back into active service or participation.
    • The club hopes to reactivate former members by offering a free trial month.
    • After a long break, she decided to reactivate her volunteer status at the shelter.
    • The army decided to reactivate several retired officers for the new mission.
  3. To cause a chemical or biological process to become active again.
    • Certain conditions can reactivate the virus in the body.
    • The catalyst helps reactivate the chemical reaction after it slows down.
    • The scientist added an enzyme to reactivate the dormant bacteria.