• synonyms


or ter·cen·ten·ni·al

[tur-sen-ten-uh-ree, tur-sen-tn-er-ee; especially British tur-sen-tee-nuh-ree]
adjective, noun, plural ter·cen·ten·ar·ies.
  1. tricentennial.
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Origin of tercentenary

First recorded in 1835–45; ter- + centenary


[trahy-sen-ten-ee-uh l]
  1. pertaining to 300 years or a period of 300 years.
  2. marking the completion of such a period: a tricentennial celebration.
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  1. a 300th anniversary or its celebration.
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Also tercentenary, tercentennial.

Origin of tricentennial

First recorded in 1880–85; tri- + centennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tercentennial

Historical Examples of tercentennial

  • I again heartily commend to your favorable consideration the tercentennial celebration at Jamestown, Va.

    State of the Union Addresses of Theodore Roosevelt

    Theodore Roosevelt

British Dictionary definitions for tercentennial



  1. of or relating to a period of 300 years
  2. of or relating to a 300th anniversary or its celebration
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noun plural -tenaries or -tennials
  1. an anniversary of 300 years or its celebration
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Also called: tricentennial
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

Word Origin and History for tercentennial



1844, "pertaining to a period of 300 years," from ter- "three times" + centenary.

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Online Etymology Dictionary, © 2010 Douglas Harper