bimillennial

/baɪˈmɪlɛn.i.əl/

BAꞮMꞮLƐN · i · əl (3 syllables)

English Noun

Definition

The 2,000th anniversary of an event or happening.

Etymology

From Latin bimillennialis, from bi- (“two”) mill- (“thousand”) + enni(us) (“yearly”), by analogy with bicentennial.