tricennial

Etymology
From +, from  + , from  +  +. Compare 🇨🇬. Equivalent to. .

Adjective

 * Of, related to, lasting, or occurring once every thirty years.
 * 1)  Of or related to a tricennalia, the celebrations marking the 30th year of a Roman emperor's rule.

Translations

 * French:
 * Latin: tricennalis