tercentenary

or ter·cen·ten·ni·al

[ tur-sen-ten-uh-ree, tur-sen-tn-er-ee; especially British tur-sen-tee-nuh-ree ]

adjective

, plural ter·cen·ten·ar·ies.

1. tricentennial.

tercentenary

/ ˌtɜːsɛnˈtiːnərɪ /

adjective

1. of or relating to a period of 300 years
2. of or relating to a 300th anniversary or its celebration

noun

1. an anniversary of 300 years or its celebration

Word History and Origins

Origin of tercentenary¹

First recorded in 1835–45; ter- + centenary

Example Sentences

And Mendelssohn wrote the “Reformation” Symphony for the tercentenary — but in 1830, the anniversary of the Augsburg Confession, not 1817, a year after the 7-year-old Mendelssohn, born Jewish, was baptized a Lutheran.

From New York Times

In compensation, the government allowed the central bank to keep some funds, which the bank used in 1968 to endow the Nobel prize in economics as a vanity project to mark its tercentenary.

From The Guardian

But why did the Royal Navy, which celebrates the tercentenary of Lind's birth on 4 October 2016, take nearly half a century to act on his findings?

From BBC

It was the perfect place to celebrate the queen’s birthday on June 4th in this tercentenary year, reckons Simon McDonald, the British ambassador.

From Economist

The Queen marked the tercentenary of the Revolution of 1688-89 and the Bill of Rights with another speech to MPs and peers.

From BBC