Semiquincentennial

//ˌsɛmiˌkwɪnsɛnˈtɛniəl// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A 250th anniversary.

    "The year 2026 will mark the semiquincentennial of the founding of the United States."

Synonyms

All synonyms
sestercentennial

Example

More examples

"The year 2026 will mark the semiquincentennial of the founding of the United States."

Etymology

From semi- + quincentennial.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.