The plural form for the singular noun millennium is millennia. The word millenniums is also an accepted form.
The irregular plural for millennium is millennia.
millennium is singular, millennia is plural
Millennia
millennia
A millennium (plural millennia or millenniums) is a period of time equal to 1,000 years.
The plural of the noun "half" is "halves."
The plural noun for path is paths. The plural noun for patch is patches.
The plural noun of general is generals. Generals is a regular plural noun.
No, Mice is a plural noun. Mouse is the singular noun.
No, it is a possessive noun. Mothers is a plural noun.
It is a plural noun.
The plural form of the noun newspaper newspapers.