Where does “biennium” come from?

biennium (English) comes from Latin biennium, from Latin annus, from Proto-Italic atnos, from Proto-Indo-European h₂et-no-, from Proto-Indo-European h₂et- — grass.

biennium (English): A period of two years

Definitions

  1. A period of two years

Ancestry of “biennium”, step by step

StepLanguageWordMeaning
1Latinbienniumbiennium; genitive masculine plural of biennis;...
2Latinannusyear; time; season
3Proto-Italicatnosyear
4Proto-Indo-Europeanh₂et-no-—
5Proto-Indo-Europeanh₂et-grass
Every word from Proto-Indo-European h₂et- →Every word from Proto-Indo-European h₂et-no- →Every word from Proto-Italic atnos →