# extrados

> English word · Noun

## Definitions
1. The outer or upper curve of an arch.

## Etymology
From French extradossé (“outer curve”) from Latin extra (“outside”) + dos (“back”) (from Latin dorsum).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/extrados