Meaning & use
millenium or millennium
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Meanings
nouncountable
A period of one thousand years, often counted from a particular starting point.
Grammar: Countable: 'a millennium', 'two millennia'. The plural 'millennia' is more formal than 'millenniums'.
Patterns
- a millennium of something
- the next millennium
- for millennia
The city has stood on this site for more than a millennium.
Many people celebrated the start of the new millennium in 2000.
These customs have survived for millennia.
nounsingularreligion
A period of a thousand years that some Christians expected to bring dramatic change, mentioned in the Bible.
Grammar: Often used with 'the' in religious writing: 'the coming millennium'.
Patterns
- the millennium
The sermon was about the thousand-year reign described as the millennium.
Some groups believed the millennium would begin after a great battle.
Word forms
| plural | millennia |
|---|---|
| plural | millenniums |
Common combinations
- the new millennium
- Fireworks lit the sky at the start of the new millennium.
- for millennia
- Farmers have grown rice in these valleys for millennia.
- a millennium of peace
- The treaty promised a millennium of peace, though it did not last.
- the turn of the millennium
- At the turn of the millennium, few people had smartphones.
Synonyms and how they differ
- thousand years
- A plain phrase with the same meaning; use it when you want to avoid the spelling difficulty or sound less formal.
Word family
- millennial adjective
- Relating to a millennium, or (as a noun) a person born around the 1980s–1990s.
Commonly confused: millenium or millennium or millenium? millenium or millennium or million?
millenium or millennium vs millenium
A misspelling with only one n. Always write 'millennium' with a double n.
millenium or millennium vs million
Means 1,000,000, not 1,000 years; the two words look similar but are unrelated in meaning.
Practice
Which is the correct spelling?
Choose one answer.
'Millennium' has two l's and two n's. The single-n version 'millenium' is a common error but is not standard English.
Make it your own
Write a sentence using “millenium or millennium”, then check it and compare it with the examples above.