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sesquicentennial

[ ses-kwi-sen-ten-ee-uhl ]

adjective

  1. pertaining to or marking the completion of a period of 150 years.


noun

  1. a 150th anniversary or its celebration.

sesquicentennial

/ ˌsɛskwɪsɛnˈtɛnɪəl /

adjective

  1. of or relating to a period of 150 years
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


noun

  1. a period or cycle of 150 years
  2. a 150th anniversary or its celebration
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˌsesquicenˈtennially, adverb
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Other Words From

  • sesqui·cen·tenni·al·ly adverb
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Word History and Origins

Origin of sesquicentennial1

An Americanism dating back to 1875–80; sesqui- + centennial
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Example Sentences

Cedar Point had to postpone its sesquicentennial celebration till its 151st birthday, and Hersheypark has finally put the finishing touches on the 23-acre expansion of Hershey’s Chocolatetown, which opened last July.

Many of us have tired of the blizzard of histories marking the sesquicentennial of the first years of the American Civil War.

The ongoing sesquicentennial celebration has only redoubled that flood of new material and public fascination with the war.

It was on the engine at the time of the Carlisle sesquicentennial but disappeared by the time of the St. Louis exposition.

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