tricennalia

Etymology
From, from + , from  + , from  +  +. Equivalent to.

Noun

 * 1)  The festival and religious rituals celebrating a Roman emperor's 30th year of rule.
 * 2) * 2012, Gary Forsythe, "Magna Mater and the Taurobolium", Time in Roman Religion, p. 111:
 * As a chronological list of Roman emperors makes clear, several rulers reign long enough to enjoy their decennalia, but relatively few were fortunate enough to celebrate their vicennalia, their twentieth imperial anniversary; and from the second century onwards alone ruled long enough to celebrate a tricennalia.
 * As a chronological list of Roman emperors makes clear, several rulers reign long enough to enjoy their decennalia, but relatively few were fortunate enough to celebrate their vicennalia, their twentieth imperial anniversary; and from the second century onwards alone ruled long enough to celebrate a tricennalia.

Translations

 * French:
 * Italian: tricennale
 * Latin: trīcennālia

Etymology
From, from + , from  +  +.

Noun

 * 1)  tricennalia, the festival and religious rituals celebrating a Roman emperor's 30th year of rule.