gnathion gnathidium • gnathism · · · Info · Definitions · Characters · · gnathion · · Text Latin · · Script 8 · · Length Definitions · · · (noun) the most inferior point of the mandible in the midline. · · Noun Definition 1 Characters · · a latin small letter a U+0061 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074