Definition of sesquicentennial in English:

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sesquicentennial

Pronunciation: /ˌseskwəsenˈtenēəl/

adjective

Relating to the one-hundred-and-fiftieth anniversary of a significant event.
Example sentences
  • The University of Michigan Medical School this year celebrates its sesquicentennial anniversary.
  • Renovation and redecoration of church property was followed by an elaborate sesquicentennial celebration.
  • Thus it was that I wound up postponing my degree and staying a fifth year to edit the sesquicentennial edition of the university's yearbook.

noun

A one-hundred-and-fiftieth anniversary.
Example sentences
  • He performed at Harold Washington's mayoral inauguration in 1987, at Washington's funeral, and at Chicago's sesquicentennial.
  • Philadelphia's 1926 effort to mark the nation's sesquicentennial with a world's fair was an aesthetic and commercial disappointment.
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