TRIENNIUM


Meaning of TRIENNIUM in English

[ trʌɪ'ɛnɪəm ]

■ noun ( plural triennia -nɪə or ~s ) a period of three years.

Origin

C19: from L., from tri- 'three' + annum 'year'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.