extrados /ek-strāˈdos/ (architecture)

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

• expresso
• express oneself
• expressos
• express packet
• express packets
• express parcel
• express parcels
• express rifle
• express rifles
• express term
• express terms
• express train
• express trains
• expressure
• expressures
• express volumes
• expressway
• expressways
• exprobrate
• exprobrated
• exprobrates
• exprobrating
• exprobration
• exprobrations
• exprobrative