"inaugural" in the noun sense
1. inaugural address, inaugural
an address delivered at an inaugural ceremony (especially by a United States president)
2. inauguration, inaugural
the ceremonial induction into a position
"the new president obviously enjoyed his inauguration"
"inaugural" in the adjective sense
1. inaugural
occurring at or characteristic of a formal investiture or induction
"the President's inaugural address"
"an inaugural ball"
2. inaugural, initiative, initiatory, first, maiden
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"
Source: WordNet® (An amazing lexical database of English)
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