millennial

[adj] - relating to a millennium or span of a thousand years
Found on http://www.webdictionary.co.uk/definition.php?query=millennial

Millennial

Mil·len'ni·al adjective Of or pertaining to the millennium, or to a thousand years; as, a millennial period; millennial happiness.
Found on http://www.encyclo.co.uk/webster/M/66

millennial

millennian adjective relating to a millennium or span of a thousand years
Found on http://wordnetweb.princeton.edu/perl/webwn?s=millennial

Millennial

• (a.) Of or pertaining to the millennium, or to a thousand years; as, a millennial period; millennial happiness.
Found on http://thinkexist.com/dictionary/meaning/millennial/
No exact match found