alluvia
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Related to alluvia: alluvial
al·lu·vi·a
(ə-lo͞o′vē-ə)n.
A plural of alluvium.
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.