One entry found for millennium.
Main Entry: mil·len·ni·um
Pronunciation: m-len--m
Function: noun
Inflected Form(s): plural millen·nia /--/; or -ni·ums 1 a: a period of 1000 years b: a 1000th anniversary or its celebration 2: a period of great happiness - mil·len·ni·al /--l/ adjective