Scots Gaelic translation of triennial is 
trì bliadhna

Translate triennial into other languages

• in Afrikaans driejaarlikse
• in Danish treårlige
• in Dutch Triënnale
• in German Triennale
• in Icelandic þriggja ára
• in Norwegian trienale
• in Swedish Triennalen
• in Yiddish טריעניאַל
• in Frisian triennial
• in Luxembourgish Tausend Joer