1. Designating a crystal whose primitive form is a four-sided prism, and its secondary of eight sides.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• oerioctahedral,
• lerioctahedral,
• -erioctahedral,
• 0erioctahedral,
• pwrioctahedral,
• psrioctahedral,
• pdrioctahedral,
• prrioctahedral,
• p4rioctahedral,
• p3rioctahedral,
• peeioctahedral,
• pedioctahedral,
• pefioctahedral,
• perioctaedral,
• perioctahdral,
• periocathedral,
• Parioctahedral,
• Periochtahedral,
• Periocahtahedral,
• Periocterhedral