of, found in, or made up of, alluvium
Origin of alluvial; from Classical Latin alluvius (see alluvion) + -al
Of, relating to, or found in alluvium: alluvial soil; alluvial gold.
- The noun is normally used in the plural by engineers who recover valuable minerals from these layers.
From Latin alluvius (“alluvial”), from alluviō (“an overflowing, inundation”), from alluō (“wash against”).