An activate is an action that makes something start working or happens.
When you think about getting something activated, it's like turning on a light switch - suddenly things start moving! For example, if your bank account is activated, it means they've made it ready to use. Or, when a new employee joins the company and their account gets activated, it means all their permissions are set up so they can access the system. Sometimes, you might need to activate something like a phone plan or a video game subscription - it's like giving yourself permission to enjoy those services. When an app is activated on your phone, it starts doing its thing.
To encourage development or induce increased activity; to stimulate.
