1. an address delivered at an inaugural ceremony (especially by a United States president)
2. the ceremonial induction into a position;
"the new president obviously enjoyed his inauguration"
Adjective
1. occurring at or characteristic of a formal investiture or induction;
"the President's inaugural address""an inaugural ball"
2. serving to set in motion;
"the magazine's inaugural issue""the initiative phase in the negotiations""an initiatory step toward a treaty""his first (or maiden) speech in Congress""the liner's maiden voyage"