bimillennial

noun, adj — 2 senses

bimillennial

noun

/baɪˈmɪlɛn.i.əl/

Etymology From Latin bimillennialis, from bi- (“two”) mill- (“thousand”) + enni(us) (“yearly”). By surface analysis, bi- + millennial. Compare bicentennial.

1

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

bimillennial

adj

Etymology From Latin bimillennialis, from bi- (“two”) mill- (“thousand”) + enni(us) (“yearly”). By surface analysis, bi- + millennial. Compare bicentennial.

1

Occurring every 2,000 years.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.