extrados /ek-strāˈdos/ (architecture)

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

• civil wars
• civil year
• civil years
• civism
• civisms
• civvies
• civvy
• civvy street
• cizers
• CIÉ
• CJ
• CJD
• cl
• CL
• Cl
• CLA
• clabber
• clabbers
• clabby-doo
• clabby-doos
• clachan
• clachans
• clack
• clackbox
• clackboxes