tercentenary

or ter·cen·ten·ni·al

[ tur-sen-ten-uh-ree, tur-sen-tn-er-ee; especially British tur-sen-tee-nuh-ree ]
/ ˌtɜr sɛnˈtɛn ə ri, tɜrˈsɛn tnˌɛr i; especially British ˌtɜr sɛnˈti nə ri /

adjective, noun, plural ter·cen·ten·ar·ies.

Origin of tercentenary

First recorded in 1835–45; ter- + centenary

Definition for tercentennial (2 of 2)

tricentennial

[ trahy-sen-ten-ee-uh l ]
/ ˌtraɪ sɛnˈtɛn i əl /

adjective

pertaining to 300 years or a period of 300 years.
marking the completion of such a period: a tricentennial celebration.

noun

a 300th anniversary or its celebration.
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. 2019

Examples from the Web for tercentennial

British Dictionary definitions for tercentennial

tercentenary

tercentennial

/ (ˌtɜːsɛnˈtiːnərɪ) /

adjective

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