NYT Dictionary
BIENNIUM
/baɪˈɛn.i.əm/NounBI-enn-i-umbi-enn-i-um · 4 syllablesAdvanced/Professional
Accepted in official NYT Spelling Bee puzzle years: 2026
Meaning
A period of two years, particularly for purposes involving intercalation or fiscal calculations.
Etymology
Origin: Latin
From Latin biennium, from biennis (“2-year”) + -ium (suffix forming abstract nouns), from bi- (“two”) + annus (“year”), q.v.
NYT Puzzle Appearances
Accepted in 1 recorded puzzle: