[ bahy-sen-ten-uh-ree, bahy-sen-tn-er-ee; especially British bahy-sen-tee-nuh-ree ]
/ ˌbaɪ sɛnˈtɛn ə ri, baɪˈsɛn tnˌɛr i; especially British ˌbaɪ sɛnˈti nə ri /

adjective, noun, plural bi·cen·ten·ar·ies. Chiefly British.

Origin of bicentenary

First recorded in 1860–65; bi-1 + centenary Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bicentenary

  • Above her the elms, thinned of their leaf-crowns, arch their bicentenary heads; the flooded meadow flashes argent on either hand.

    Doctor Cupid|Rhoda Broughton

British Dictionary definitions for bicentenary


US bicentennial (ˌbaɪsɛnˈtɛnɪəl)

/ (ˌbaɪsɛnˈtiːnərɪ) /


marking a 200th anniversary
occurring every 200 years
lasting 200 years

noun plural -naries

a 200th anniversary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bicentenary



"pertaining to a 200-year period," 1843; see bi- + centenary. Also see bicentennial. As a noun, "a bicentennial anniversary or celebration," also from 1843.

Online Etymology Dictionary, © 2010 Douglas Harper