bimillennial
/baɪˈmɪlɛn.i.əl/
bimillennial means occurring every 2,000 years.
bimillennial is pronounced /baɪˈmɪlɛn.i.əl/.
Etymology
From Latin bimillennialis, from bi- (“two”) mill- (“thousand”) + enni(us) (“yearly”). By surface analysis, bi- + millennial. Compare bicentennial.
adj
- Occurring every 2,000 years.
noun
- The 2,000th anniversary of an event or happening.