Dictionarybi•cen•ten•ni•alPronunciation: (bī"sen-ten'ē-ul), [key] —adj. 1. pertaining to or in honor of a 200th anniversary: bicentennial celebration; a bicentennial exposition. 2. consisting of or lasting 200 years: a bicentennial period. 3. occurring every 200 years: the bicentennial return of a comet. —n. 1. a 200th anniversary: The United States had its bicentennial in 1976. 2. a celebration of such an anniversary. Also, esp. Brit.,bicentenary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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