sedimentation sedimentate • sedimentous · · · Info · Definitions · Synonyms · Characters · · sedimentation · · Text Latin · · Script 13 · · Length Definitions · · · (noun) the phenomenon of sediment or gravel accumulating. Synonyms: deposit, alluviation. · · Noun Definition 1 Synonyms · · · deposit · · Synonym 1 alluviation · · Synonym 2 Characters · · a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074