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noun

millennia

noun
1
The plural of millennium; periods of a thousand years.
"These ruins have stood for millennia."

How to Use Millennia

Learner’s notes

In plain EnglishMore than one thousand-year period — the plural form of "millennium."

Common mistake

Millennia is already plural; don't write "millenniums" or "millenias."

Common pairings
for millennia over millennia millennia ago

Word Forms

millennia plural, millennias plural

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These ruins have stood for _____.

Rhymes for millennia

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Definitions: FreeDict original editorial