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extrados

American  
[ek-struh-dos, -dohs, ek-strey-dos, -dohs] / ˈɛk strəˌdɒs, -ˌdoʊs, ɛkˈstreɪ dɒs, -doʊs /

noun

Architecture.
extrados, plural extradoses plural
  1. the exterior curve or surface of an arch or vault.


extrados British  
/ ɛkˈstreɪdɒs /

noun

  1. architect the outer curve or surface of an arch or vault Compare intrados

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of extrados

1765–75; < French, equivalent to extra- extra- + dos back (< Latin dorsum dorsum

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The form of the mound may be described as reproducing the extrados of a depressed arch.

From A History of Art in Chaldæa & Assyria, v. 1 by Armstrong, Walter, Sir

The under or concave side of the voussoirs is called the intrados, and the upper or convex side the extrados of the arch.

From The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli by Various

The stability of such structures depends on the position of the line of pressure in relation to the extrados and intrados of the arch ring.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

In one division the bedding of the bricks is strictly horizontal; in the next it is slightly concave, and forms a very flat reversed arch, of which the extrados rests upon the ground.

From Manual of Egyptian Archaeology and Guide to the Study of Antiquities in Egypt by Maspero, G. (Gaston)

The concrete arch was placed in sections, from 25 to 50 ft. in length, with a rather wet mixture and a back form on the steep slope of the extrados.

From Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158 by Brace, James H.

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