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Definition
of or connected with a flood- The bursting of ice-dammed lakes produced powerful diluvial floodstreams.
- She is studying diluvial clay from the bay.
- Nor must there be omitted another strange attestation of the antiquity of the whale, in his own osseous post-diluvian reality, as set down by the venerable John Leo, the old Barbary traveller.Herman Melville -- Moby Dick
- William Gilpin, who is so admirable in all that relates to landscapes, and usually so correct, standing at the head of Loch Fyne, in Scotland, which he describes as "a bay of salt water, sixty or seventy fathoms deep, four miles in breadth," and about fifty miles long, surrounded by mountains, observes, "If we could have seen it immediately after the diluvian crash, or whatever convulsion of nature occasioned it, before the waters gushed in, what a horrid chasm must it have appeared!Henry David Thoreau -- Walden