bimillennium bimillenial • bimillionaire · · · Info · Definitions · Synonyms · Characters · · bimillennium · · Text Latin · · Script 12 · · Length 5 · · Syllables Definitions · · · (noun) the 2000th anniversary (or the celebration of it). Synonyms: bimillenary. · · Noun Definition 1 (noun) a span of 2000 years. Synonyms: bimillenary. · · Noun Definition 2 Synonyms · · · bimillenary · · Synonym 1 Characters · · b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E u latin small letter u U+0075