octahedron

== English == === Alternative forms === octohedron === Etymology === From Ancient Greek ὀκτάεδρον (oktáedron). By surface analysis, octa- +‎ -hedron. === Pronunciation === === Noun === octahedron (plural octahedra or octahedrons) (geometry) a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids. ==== Derived terms ==== ==== Related terms ==== octahedral ==== Translations ====