Inaugural/ɪˈnɔːɡjərəl/ Definition 1 of 2Pro Tip 1/3Historical Use Often used for ceremonies marking the start of a leader's term in office or other important positions. The mayor's inaugural gala was a grand event. Pro Tip 2/3New Initiatives Commonly describes first-time events or launches, like a product or organization's debut. She attended the inaugural convention of the health forum. Pro Tip 3/3Academic Use Used in universities when a professor is formally installed and gives their first lecture. The inaugural lecture by Professor Smith was enlightening.