noun, plural ex·tra·dos [ek-struh-dohz, ek-strey-dohz] /ˈɛk strəˌdoʊz, ɛkˈstreɪ doʊz/, ex·tra·dos·es. Architecture.
Origin of extrados
Examples from the Web for extrados
Historical Examples of extrados
The under or concave side of the voussoirs is called the intrados, and the upper or convex side the extrados of the arch.
The lower surface or soffit of the arch is the intrados, E, and the upper surface the extrados, F.
The Tuscan arch, where the extrados takes the form of a pointed arch.
The four sides of the mold formed the extrados, the intrados, and the two ends of the block; the other two sides being left open.Concrete Construction
Halbert P. Gillette
The pavement of the terrace, which consists of a double bed of large bricks, rests upon the extrados of the upper channel.A History of Art in Chalda & Assyria, v. 1