extrados /ek-strāˈdos/ (architecture)

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

• pube
• puberal
• pubertal
• puberties
• puberty
• puberulent
• puberulous
• pubes
• pubescence
• pubescences
• pubescent
• pubic
• pubio-
• pubis
• pubises
• public
• public act
• public address system
• public address systems
• publican
• publicans
• public art
• publication
• publications
• public attorney