What Latin-derived term names the United States’ 250th anniversary in 2026?

The Latin-derived term naming the United States’ 250th anniversary in 2026 is the United States Semiquincentennial.

“Semiquincentennial” combines roots meaning half of 500, or 250. The anniversary commemorates the 250th anniversary of the Second Continental Congress adopting the Declaration of Independence in 1776. Its principal date is July 4, 2026, the 250th anniversary of American Independence Day.

The term can be confused with “bicentennial,” which refers to the 200th anniversary celebrated in 1976. Earlier anniversaries had different names: the centennial marked 100 years, while the sesquicentennial marked 150 years. “America250” is a widely used campaign name for the broader commemorative effort, while “United States Semiquincentennial” is the formal historical name.

Congress established the United States Semiquincentennial Commission in 2016 to help plan nationwide observances. The celebration includes historical, civic, educational, and cultural programs connected with the nation’s founding and subsequent history.