#initial-load-header-loader { visibility: hidden!important; } #initial-load-content { visibility: visible!important; } .expandable .expandable-control { display: none!important; } .expandable .expandable-content { display: block!important; visibility: visible!important; max-height: none!important; height: auto!important; }

tricentennial

[trahy-sen-ten-ee-uh l]

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