alluviation alluviate • alluvion · · · Info · Definitions · Synonyms · Characters · · alluviation · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the phenomenon of sediment or gravel accumulating. Synonyms: deposit, sedimentation. · · Noun Definition 1 Synonyms · · · deposit · · Synonym 1 sedimentation · · Synonym 2 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076