Intrados

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Intrados \In*tra"dos\, n. [F., fr. L. intra within + F. dos the
     back, L. dorsum. Cf. {Extrados}.] (Arch.)
     The interior curve of an arch; esp., the inner or lower
     curved face of the whole body of voussoirs taken together.
     See {Extrados}.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  intrados
       n : the interior curve of an arch