Related Clues:

• Quadri- plus bi-
• Prefix with decimal
• One more than penta-
• Decimal opening
• Prefix related to benzene's shape
• Prefix meaning 'six'
• Tri and tri again?
• Tetra- plus two
• 65-Across minus two
• Prefix meaning "six"
• Half of dodeca-
• Prefix for 'six'
• Prefix for "six"
• Half-dozen prefix