intrados Meaning, Definition & Usage

  1. noun the interior curve of an arch

WordNet

In*tra"dos noun
Etymology
F., fr. L. intra within + F. dos the back, L. dorsum. Cf. Extrados.
Definitions
  1. (Arch.) The interior curve of an arch; esp., the inner or lower curved face of the whole body of voussoirs taken together. See Extrados.

Webster 1913