In·trā'dos, n.
n. [Fr., from Lat. intra, within, and Fr. dos, equivalent to Lat. dorsum, the back. Cf. EXTRADOS.] (Arch.) The interior and lower line or curve of an arch; — distinguished from extrados.
n. [Fr., from Lat. intra, within, and Fr. dos, equivalent to Lat. dorsum, the back. Cf. EXTRADOS.] (Arch.) The interior and lower line or curve of an arch; — distinguished from extrados.