Elementary (A2)
IPA: //baɪˈɛn.i.əm//
KK: /bɪˈɛn.i.əm/
Definition
A time span that lasts for two years.
Example
The project will be completed over a biennium.
Conversation

Did you know that a biennium is just a fancy way to say two years?

Yeah, I heard that somewhere! It's interesting how some words can sound so formal.

Right? I was thinking about how much can change in a biennium.

Totally! Imagine all the memories we could make in just two years.
Synonyms & Antonyms
Synonyms
duumvirate
biennial
two-year
Root Explanation
Biennium → It is formed from "bi-" (meaning two) and "annus" (meaning year). The word "biennium" refers to a period of two years.
Memory Tip
Think of 'bi-' meaning two and 'annus' meaning year — that's why biennium refers to a span of two years.