intrados

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

noun

Architecture.

plural

intrados, intradoses 

1. the interior curve or surface of an arch or vault.

intrados

/ ɪnˈtreɪdɒs /

noun

1. architect the inner curve or surface of an arch or vault Compare extrados

Word History and Origins

Origin of intrados¹

1765–75; < French, equivalent to intra- intra- + dos back; dosser ¹

Word History and Origins

Origin of intrados¹

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