A millennium is 1,000 years for example 2000 is the year of a new millennium
a period of 1000 years
A millennium is one thousand (1000) years.
in some thoerys millennium wasnt real well if u believe in the bible it doesnt cuz its only 2008 ac but to answer your question a milleium is like 10000 years so a tenth millennium is like 100000...
the millennium rod is one foot and three inches long