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n. pl. bi·mil·len·ni·ums or bi·mil·len·ni·a (-lĕn′ē-ə)
1. A span of 2,000 years.
2. A 2,000th anniversary.

bi′mil·len′ni·al adj.
bi′mil·len′ni·al·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


relating to a bimillennium
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Chapter 4 turns to the Mostra Augustea della romanita (MAR), which celebrated the bimillennial anniversary in 1937 of the birth of the emperor Augustus.
Benito Mussolini had Virgil's books reissued and his likeness printed on stamps, and even staged a bimillennial extravaganza in 1930.
This book puts together nine lectures presented over three weeks in April and May 2009, toward the end of the bimillennial year of St.