Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: the exterior curve of an arch — see arch illustration
1772, in the meaning defined above
French, from Latin extra + French dos back — more at dossier
Keep scrolling for more
Resources for extrados
Time Traveler for extrados
See more words from the same year
More from Merriam-Webster on extrados
See words that rhyme with extrados
Comments on extrados
What made you want to look up extrados? Please tell us where you read or heard it (including the quote, if possible).
to make amends
Get Word of the Day daily email!
Musical Words Quiz
Test your vocabulary with our 10-question quiz!
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
How a folk song became a term of derision.
Sorry, not sorry
The participle made famous by Elvis
A not-so-sarcastic history
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
A quiz in common time.
Build a city of skyscrapers—one synonym at a time.