EXTRADOS
Source: 567
Ex‐tra″dos (?), n. [[F.; pref. extra- outside + dos (L. dorsum) the back.]] (Arch.) The exterior curve of an arch; esp., the upper curved face of the whole body of voussoirs. See Intrados.
Source: 567
Ex‐tra″dos (?), n. [[F.; pref. extra- outside + dos (L. dorsum) the back.]] (Arch.) The exterior curve of an arch; esp., the upper curved face of the whole body of voussoirs. See Intrados.