[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.
Origin of tercentenary
pertaining to 300 years or a period of 300 years.
marking the completion of such a period: a tricentennial celebration.
a 300th anniversary or its celebration.
Also tercentenary, tercentennial.
Origin of tricentennial
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
of or relating to a period of 300 years
of or relating to a 300th anniversary or its celebration
noun plural -tenaries or -tennials
an anniversary of 300 years or its celebration
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
Online Etymology Dictionary, © 2010 Douglas Harper