regular octahedron regular icosahedron • regular payment · · · Info · Definitions · Characters · · regular octahedron · · Text Common · · Latin · · Scripts 18 · · Length 7 · · Syllables Definitions · · · (noun) an octahedron with eight equilateral triangles as faces. Synonyms: regular octahedron. · · Noun Definition 1 Characters · · space U+0020 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 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075