vicennals

English

Etymology

From Latin vīcennālia, from vīcennis (“20-year”) + -ālia (“-alia: forming festival names”), from vīciēs (“twenty times”) + annus (“year”) + -is (“forming compound adjectives”).

Noun

vicennals pl (plural only)

1. (historical, rare) Synonym of vicennalia: the festival and religious ritual held on the 20th anniversary of a Roman emperor's reign.

References

• “vicennals, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.