alluvion
alluvion n. (1)冲积层;淤积层 (2)(因冲积而引起的岸边)土地自然增长;自然增长的土地
alluvion ([schwa]-loo-vee-[schwa]n). [fr. Latin alluvio “flood”] Roman & civil law. 1. Strictly, the flow or wash of water against a shore or riverbank. 2. An accumulation of soil, clay, or other material deposited by water; esp., in land law, an addition of land caused by the buildup of deposits from running water, the added land