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From Latin bi two + centum hundred + annus year + -al; surface analyses bi- + centennial and bi- + cent- + -ennial.
bicentennial (not comparable)
- Relating to the 200th anniversary of an event or happening.
- Occurring every two hundred (200) years
bicentennial (plural bicentennials)
- The 200th anniversary of an event or happening.
- The US bicentennial in 1976 was celebrated greatly because the economy happened to be good.