Main Entry:

an·te·di·lu·vi·an

Pronunciation:

\ˌan-ti-də-ˈlü-vē-ən, -(ˌ)dī-\

Function:

adjective

Etymology:

ante- + Latin diluvium flood — more at deluge

Date:

1646

1: of or relating to the period before the flood described in the Bible2 a: made, evolved, or developed a long time ago <an antediluvian automobile> b: extremely primitive or outmoded <an antediluvian prejudice>

— antediluvian noun