| Diluvium | n.; pl. E. Diluviums L. Diluvia [ L. diluvium. See Dilute, Deluge. ] (Geol.) A deposit of superficial loam, sand, gravel, stones, etc., caused by former action of flowing waters, or the melting of glacial ice. [ 1913 Webster ] ☞ The accumulation of matter by the ordinary operation of water is termed alluvium. [ 1913 Webster ] |
| Alluvium | n.; pl. E. Alluviums, L. Alluvia [ L., neut. of alluvius. See Alluvious. ] (Geol.) Deposits of earth, sand, gravel, and other transported matter, made by rivers, floods, or other causes, upon land not permanently submerged beneath the waters of lakes or seas. Lyell. [ 1913 Webster ] |