What does "intrados" mean?

The inner curve of an arch or vault.

What is a synonym for "intrados"?

Common synonyms include: bosom, center, concave surface, core, heart, inner man.

noun

noun ·Rare ·Advanced level

Noun

1
The inner curve of an arch or vault.
"* Application of stitching bars to intrados (inner arch) though cracked voussoirs, grout and apply crack injection to seal."
2
the interior curve of an arch wordnet

"* Application of stitching bars to intrados (inner arch) though cracked voussoirs, grout and apply crack injection to seal."

From French, from Latin intra (“within”) + French dos (“back”) (from Latin dostrum).