BICENTENNIAL

A bicentennial:is the two-hundredth anniversary of an event, or the celebrations pertaining thereof. in the US, is a synonym for the United States Bicentennial.in Australia, is a synonym for the 1988 Australian Bicentenary.
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BICENTENNALE. BICENTENARIO

bicentennial
\bi`cen*ten"ni*al\, a. [pref. bi- + centennial.]
1. consisting of two hundred years.
2. occurring every two hundred years.
bicentennial
\bi`cen*ten"ni*al\, n. the two hundredth year or anniversary, or its celebration.