great grandson great grandparent • great-grandson · · · Info · Definitions · Characters · · great grandson · · Text Common · · Latin · · Scripts 14 · · Length 3 · · Syllables Definitions · · · (noun) a son of your grandson or granddaughter. Synonyms: great grandson. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074