Definitions
1.AdjectiveOccurring once every twenty years.
2.AdjectiveLasting for twenty years.
3.NounA twenty-year period
4.NounA twentieth anniversary, particularly
Synonym of vicennalia, the festival and religious ritual held in the 20th year of a Roman emperor's reign.
5.NounSynonym of vicennalia, the festival and religious ritual held in the 20th year of a Roman emperor's reign.