An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1) To induce activity in a system that is static, as in neutron activation of radioactivity.
2) To start the operation of an electrical device.

Activate, verb from → active.

Žirândan, transitive verb from žir, → act.

To cause to be → inactive; remove the → effectiveness of (Dictionary.com).

→ de-; → activate.