intrados

[ in-truh-dos, -dohs, in-trey-dos, -dohs ]

/ ˈɪn trəˌdɒs, -ˌdoʊs, ɪnˈtreɪ dɒs, -doʊs /

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noun, plural in·tra·dos

[in-truh-dohz, in-trey-dohz], /ˈɪn trəˌdoʊz, ɪnˈtreɪ doʊz/, in·tra·dos·es.Architecture.

the interior curve or surface of an arch or vault.Compare extrados.

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Origin of intrados

1765–75; <French, equivalent to intra-intra- + dos back; see dosser¹

Words nearby intrados

intractable, intracutaneous, intracutaneous test, intraday, intradermal, intrados, intrafascicular, intragalactic, intragenerational mobility, intralingual, intramarginal

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use intrados in a sentence

The under or concave side of the voussoirs is called the intrados, and the upper or convex side the extrados of the arch.
The New Gresham Encyclopedia. Vol. 1 Part 2|Various
The inner surface, or intrados, and the remainder of the extrados are smoothly dressed (fig. 38).
The Cultural History of Marlborough, Virginia|C. Malcolm Watkins
In S. Sophia the vault springs from the intrados of the transverse arches, that is, from the lower edge.
Byzantine Churches in Constantinople|Alexander Van Millingen
Intrados: The under or concave face of the solid structure of an arch.
How to judge architecture|Russell Sturgis

It was determined to attempt to stop these leaks by the application of a water-proof cement coating on the intrados of the arch.
Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910|James H. Brace and Francis Mason

British Dictionary definitions for intrados

intrados

/ (ɪnˈtreɪdɒs) /

noun plural -dos or -doses

architect the inner curve or surface of an arch or vaultCompare extrados

Word Origin for intrados

C18: from French, from intra- + dos back, from Latin dorsum

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