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extrados

play
noun ex·tra·dos \ˈek-strə-ˌdäs, -ˌdō; ek-ˈstrā-ˌdäs\

Definition of extrados

plural

extradoses

play \-ˌdä-səz\ or

extrados

\-ˌdōz, -ˌdäs\
  1. :  the exterior curve of an arch — see arch illustration



Origin and Etymology of extrados

French, from Latin extra + French dos back — more at dossier


First Known Use: 1772


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