ex·​tra·​dos ˈek-strə-ˌdäs How to pronounce extrados (audio)
plural extradoses ˈek-strə-ˌdä-səz How to pronounce extrados (audio) or extrados ˈek-strə-ˌdōz How to pronounce extrados (audio) -ˌdäs How to pronounce extrados (audio)
: the exterior curve of an arch see arch illustration

Word History


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

First Known Use

1772, in the meaning defined above

Time Traveler
The first known use of extrados was in 1772

Dictionary Entries Near extrados

Cite this Entry

“Extrados.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extrados. Accessed 30 May. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!