graben /gräˈbən/ (geology)

A rift valley (qv under rift¹)

• personnel
• personnel carrier
• personnel carriers
• personnel monitoring
• person of honour
• personpower
• personpowers
• persons
• person-to-person
• perspectival
• perspective
• perspective glass
• perspectively
• perspective plane
• perspectives
• perspectivism
• perspectivisms
• perspectivist
• perspectivists
• Perspex
• perspicacious
• perspicaciously
• perspicacities
• perspicacity
• perspicuities