a. [f. L. alluvi-um + -AL 1. Cf. mod.Fr. alluvial.] Of, pertaining to, or consisting of alluvium; deposited from flowing water; or pertaining to such a deposit.
1802. Playfair, Illustr. Hutton. Th., 463. Contained in the soil or alluvial earth.
1850. Layard, Nineveh, xiii. 342. The soil, an alluvial deposit, was rich and tenacious.
1858. Geikie, Hist. Boulder, x. 194. Alluvial matter still darkened the water.
1878. Huxley, Physiogr., 142. The rich alluvial mud of Egypt.
