- of or belonging to the period before the Flood. Genesis 7, 8.
- very old, old-fashioned, or out of date; antiquated; primitive: antediluvian ideas.
- a person who lived before the Flood.
- a very old or old-fashioned person or thing.
- belonging to the ages before the biblical Flood (Genesis 7, 8)
- old-fashioned or antiquated
- an antediluvian person or thing
