great-grandchild great grandchild • great granddaughter · · · Info · Definitions · Characters · · great-grandchild · · Text Common · · Latin · · Scripts 16 · · Length 3 · · Syllables Definitions · · · (noun) a child of your grandson or granddaughter. Synonyms: great grandchild. · · Noun Definition 1 Characters · · - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074