compactness compactly • compactor · · · Info · Definitions · Synonyms · Characters · · compactness · · Text Latin · · Script 11 · · Length Definitions · · · (noun) the spatial property of being crowded together. Synonyms: concentration, density, denseness, tightness. · · Noun Definition 1 (noun) the consistency of a compact solid. · · Noun Definition 2 Synonyms · · · concentration · · Synonym 1 density · · Synonym 2 denseness · · Synonym 3 tightness · · Synonym 4 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074