Al-lū'vi-ŭm, n.

n.; pl. ALLUVIA. [Lat. alluvium, n., from alluvius. See supra.] (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.

In this alluvium was found the entire skeleton of a whale. Buckland.