alluvionoverflow; floodNot to be confused with:alluvium ? a deposit of sand, mud, silt, or gravel formed by flowingeluvium ? a deposit of soil, dust, or rock debris formed by the decomposition of rockilluvium ? the material accumulated through soil that has been leached out of another layer of soilAbused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embreeal·lu·vi·on (?-lo?o?v?-?n)n.1. See alluvium.2. The flow of water against a shore or bank.3. Inundation by water; flood.4. Law The increasing of land area along a shore by deposited alluvium or by the recession of water.[Latin alluvi?, alluvi?n-, from alluere, to wash against : ad-, ad- + -luere, to wash; see leu(?)- in Indo-European roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.alluvion (??lu?v??n) n1. (Physical Geography) a. the wash of the sea or of a riverb. an overflow or floodc. matter deposited as sediment; alluvium2. (Physical Geography) law the gradual formation of new land, as by the recession of the sea or deposit of sediment on a riverbed[C16: from Latin alluvi? an overflowing, from luere to wash]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014al?lu?vi?on (??lu vi ?n) n. 1. Law. a gradual increase of land on a shore or riverbank by the action of water. 2. overflow; flood. [1530?40;