/ Dictionary / Index B bimillenary: Meaning and Definition of Find definitions for: bi•mil•le•nar•y Pronunciation: (bī-mil'u-ner"ē), [key] — adj., n., pl. -nar•ies. —adj. of or pertaining to a bimillennium. —n. bimillennium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bimillenary (Thesaurus) bimetallism bimillennium Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language