Bicentennial (noun)

1. A 200th anniversary or celebration.
2. The celebration or marking of the 200th year of a significant event or occurrence.

Origin:

The word 'bicentennial' originated in the late 18th century and is derived from the prefix 'bi' meaning two, and the word 'centennial' which means a hundred years.

Examples:

1. The city organized a bicentennial celebration to commemorate the founding of the city 200 years ago.
2. The country was preparing to celebrate its bicentennial with a series of events and festivities.
3. The bicentennial of the American Revolution was a significant moment in the country's history, marking 200 years of independence.
4. The bicentennial of the invention of the telephone was marked by a series of events and exhibitions celebrating the milestone.
5. The bicentennial of the signing of the Declaration of Independence was a significant event for the country, marking 200 years of freedom and democracy.