alluvial flat alluvial fan • alluvial plain · · · Info · Definitions · Synonyms · Characters · · alluvial flat · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) a flat resulting from repeated deposits of alluvial material by running water. Synonyms: alluvial flat, alluvial plain. · · Noun Definition 1 Synonyms · · · alluvial plain · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076