exercising

noun | \ ˈek-sər-ˌsīz \ | ex·er·cise

1. : the discharge of an official function or professional occupation

2. : the act or an instance of carrying out the terms of an agreement (as an option)

transitive verb

1. : to make effective in action exercising power

2. : to bring to bear exercise influence

3. : to implement the terms of (as an option)