IPA: /ɒkˈteɪdrəl/
KK: /ɑkˈteɪdrəl/
Describing a shape that has eight flat surfaces or faces.
The crystal had an octahedral shape, making it look like two pyramids joined at their bases.
Octahedral → It is formed from "octa-" (from Greek "okta", meaning eight) and "hedra" (from Greek "hedra", meaning face or base). The word "octahedral" refers to a three-dimensional shape with eight faces.
Think of the prefix 'octa-' meaning eight, and 'hedra' meaning faces — so an octahedral shape has eight faces.