What alternate term for the United States Semiquincentennial means a 250th anniversary?

The alternate term for the United States Semiquincentennial is Sestercentennial.

The word describes a 250th anniversary, just as bicentennial describes 200 years and tricentennial describes 300 years. America’s 250th anniversary commemorates the anniversary of the Declaration of Independence and is scheduled for July 4, 2026.

“Semiquincentennial” is another technical name for the occasion. It combines elements meaning half and five hundred, while “sestercentennial” is built from Latin-derived numerical parts associated with two hundred and fifty. “Bisesquicentennial” and “quarter millennium” also appear as alternative descriptions.

The celebration is often branded America250 rather than using one of these longer terms. The terminology can be confusing because the anniversary marks the nation’s 250th year since independence, not 250 years from the Constitution’s ratification or the first presidential inauguration.