The meaning of BIENNIUM is a period of two years.

Dec 26, 2025 · This international art exhibition is held every biennium. From Latin biennium, from biennis (“ 2 - year ”) + -ium (suffix forming abstract nouns), from bi- (“ two ”) + annus (“ year ”), q.v.

biennium, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

biennium in American English (baiˈeniəm) noun Word forms: plural -enniums or -ennia (-ˈeniə) a period of two years

BIENNIUM definition: a period of two years. See examples of biennium used in a sentence.

Define biennium. biennium synonyms, biennium pronunciation, biennium translation, English dictionary definition of biennium. n. pl. bi·en·ni·ums or bi·en·ni·a A two-year period. American Heritage® …

A “biennium” (/baɪˈɛniəm/) is a period of two years. The term is often used to describe two-year cycles in various contexts such as fiscal budgeting, educational programs, and legislative sessions.

Biennium definition: A two-year period.

Biennial means (an event) lasting for two years or occurring every two years. The related term biennium is used in reference to a period of two years. In particular, it can refer to: Biennial plant, a plant which …

In modern English, the term “biennium” is often used in contexts that require a formal or technical description of a two-year period. It is common in academic, legal, and financial documents.