extrados /ek-strāˈdos/ (architecture)

1. The convex surface of an arch
2. The external curve of the keystone of an arch

• plethysmograph
• plethysmographs
• pleuch
• pleuchs
• pleugh
• pleughs
• pleura
• pleurae
• pleural
• pleurapophyses
• pleurapophysis
• pleurisies
• pleurisy
• pleurisy-root
• pleuritic
• pleuritical
• pleuritics
• pleuritis
• pleuritises
• pleurodont
• pleurodynia
• pleurodynias
• pleuron
• Pleuronectes
• Pleuronectidae