I. |antēdə̇|lüvēən |aan-, -tə̇d-, -ˌdī|-, -vyən adjective
also an·te·di·lu·vi·al -vēəl, -vyəl
Etymology: antediluvian from ante- + Latin diluvium flood + English -an; antediluvial from ante- + diluvial — more at deluge
1. : of or relating to the period before the Flood described in the Bible
antediluvian man
2. : antiquated : made, evolved, or developed a long time ago
an antediluvian automobile
Synonyms: see old
II. noun
( -s )
1. : one that lived before the Flood described in the Bible
2. : one that is very old or behind the times