bimillenary

[bahy-mil-uh-ner-ee]
noun, plural bi·mil·le·nar·ies.
  1. bimillennium.
Also bi·mil·len·ni·al [bahy-mi-len-ee-uh l] /ˌbaɪ mɪˈlɛn i əl/.

Origin of bimillenary

First recorded in 1840–50; bi-1 + millenary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for bimillenary

bimillenary

adjective
  1. marking a two-thousandth anniversary
noun plural -naries
  1. a two-thousandth 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