1. Seven
   - hepta-

Encyclopedia: Septua-

• catamaran
• catamenia
• catamenial
• catamite
• catamount
• catamountain
• catananche
• Catananche caerulea
• cataphasia
• cataphatic
• cataphatism
• cataphoresis
• cataphoretic
• cataphract
• cataphyll
• backhand stroke
• backhanded
• backhander
• backhaul
• backhoe
• backing
• backlash
• backless
• backlight
• backlighting