How do you spell Millennium?
Correct spelling
millennium
Two L's, two N's. MILL + ENNI + UM.
Why is millennium spelled this way?
From Latin mille (thousand) + annus (year). A millennium is a thousand years — time measured in the largest common unit, marking the grandest cycles of history.
Common misspellings of millennium
milleniummilenniummileniummilllennium
Example
We celebrated the new millennium in 2000.