graben /gräˈbən/ (geology)

A rift valley (qv under rift¹)

• image intensifier
• image intensifiers
• imageless
• image-maker
• image-makers
• image orthicon
• image orthicons
• image printer
• image printers
• image processing
• image processor
• image processors
• imager
• imageries
• imagers
• imagery
• images
• image-worship
• imaginable
• imaginableness
• imaginablenesses
• imaginably
• imaginal
• imaginarily
• imaginariness