millenary

adj

1. (not-comparable)Of or pertaining to a thousand, especially to a thousand years.
2. (not-comparable)Of or pertaining to a millennium; millenarian.

   “Surely, this operation hath this millenary doctrine had upon the hearts of men, that, though they are thereupon apt to expect an appropinquation of their Saviour for their happy advantage, yet they resolutely put off the thought of his coming to the general judgment of the world for many generations.”

noun

1. (archaic)A period of one thousand years; a millennium.