bicentennial

[ bahy-sen-ten-ee-uh l ]
/ ˌbaɪ sɛnˈtɛn i əl /

adjective

pertaining to or in honor of a 200th anniversary: bicentennial celebration; a bicentennial exposition.
consisting of or lasting 200 years: a bicentennial period.
occurring every 200 years: the bicentennial return of a comet.

noun

a 200th anniversary: The United States had its bicentennial in 1976.
a celebration of such an anniversary.
Also especially British, bicentenary.

Origin of bicentennial

First recorded in 1880–85; bi-1 + centennial

OTHER WORDS FROM bicentennial

bi·cen·ten·ni·al·ly, adverb

usage note for bicentennial

See bi-1.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020