a. [f. L. alluvi-us (see next) + -OUS.] Of alluvial character, washed up.
1731. Bailey, Alluvious, overflowing.
1755. Johnson, Alluvious, that which is carried by water to another place, and lodged upon something else.
1837. Lockhart, Scott, IV. 286. The aforesaid alluvious substances which formed its shores.