1. the exterior curve of an arch

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• wxtrados,
• sxtrados,
• dxtrados,
• rxtrados,
• 4xtrados,
• 3xtrados,
• eztrados,
• ectrados,
• edtrados,
• estrados,
• exrrados,
• exfrados,
• exgrados,
• exyrados,
• ex6rados,
• ex5rados,
• exteados,
• extradoes,
• extrado,
• extridos

• extra large,
• extract,
• extraneous,
• extractable,
• extradition,
• extracts,
• estradiol,
• extra,
• extractor,
• extrude,
• extradural,
• extravasate,
• exoteric,
• extra point,
• extradite.

The adjective form of the word "extrados" is "extradosed".