Definitions

1. verb

to begin or start something, such as an event, process, or activity

“The new semester will commence on Monday.”

2. verb

to take the first step in a process or to initiate a plan

“The company will commence construction on the new building next month.”

3. noun

the act of beginning or starting something

“The commencement of the new policy has caused controversy among employees.”

4. noun

a ceremony or event to mark the beginning of something

“The commencement ceremony for the graduating class was held on Saturday.”