Related Clues:

• Bi- x four
• Unit equivalent to one eighth of the sky area
• Prefix between septa- and nona-
• Nona- minus one
• Prefix meaning 'eight'
• ___-core processor (Samsung smartphone hardware)
• Eight in front?
• Multiple of tetra-
• One less than nona-
• Two times quadri-
• Numerical opener
• Four times bi-