Pertaining to a deluge, or flood; diluvial(adjective)
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Use "diluvian" in a sentence
"Sufficient is however left to show that it belongs to an order of animals not yet described as either of anti or post-diluvian existence."
"A. David Lewis and MP Mann have made their four-issue series on diluvian or flood myths, Some Kind of Slaughter, available for free download in the hopes of garnering a Harvey Awards nomination."
"Hanley Black's wife, a stout-in-the-middle matron of 45, thinks "It's positively indecent" while her husband "surveyed his wife's criminal shapelessness and voluminousness of ante-diluvian, New England swimming dress with a withering, contemplative eye" and tells her in a sentence never uttered by a human before or since, "You appear as a creature shameful, under a grotesqueness of apparel striving to hide some secret awfulness.""