Inaugural (adjective)

1. Relating to or marking the beginning of a new period of office, especially of a president.
2. Relating to or forming an inauguration ceremony.
3. Relating to or being the first of its kind.

Origin:

Late 16th century, from latin inaugurālis, from inaugurare "to consecrate by taking omens", from in- "into" + augurare "to take omens".

Examples:

1. The inaugural address was broadcast live on national television.
2. The inaugural ball was a glittering event attended by many dignitaries.
3. The inaugural season of the new professional sports league was a huge success.
4. The inaugural flight of the new airline was met with excitement and anticipation.
5. The inaugural exhibition of the new art museum was a critical and popular success.