TRIENNIAL


Meaning of TRIENNIAL in English

[ trʌɪ'ɛnɪəl ]

■ adjective lasting for or recurring every three years.

■ noun a visitation of an Anglican diocese by its bishop every three years.

Derivatives

~ly adverb

Origin

C16: from late L. triennis (from L. tri- 'three' + annus 'year') + -al .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.