You searched English word "Triennial" meaning in Spanish that is "trienal". Triennial is a Adjective. We Spell Triennial as [trahy-en-ee-uh L]. Triennial meaning in Spanish has been searched 1366 ( one thousand three hundred sixty six ) times till today 09/08/2026. Get translation of the word Triennial in Urdu and Roman Urdu. Learn how to speak Triennial Word in Spanish and English. You may also find the meaning of Word Triennial in English to Spanish, Urdu, Arabic, French, German, Hindi and other languages.