Artificial intelligent assistant

archivolt

archivolt Arch.
  (ˈɑːkɪvəʊlt)
  Also 8 -vault.
  [ad. It. archivolto, arcovolta (or F. archivolte, with ch soft), f. arco:—L. arcus arch + volta vault, arch, volto arched. Archivoltum is found in med.L.]
  The under curve or inner contour of an arch, from impost to impost; the band of mouldings which ornaments this curve.

1731 in Bailey. 1761 J. Kirby Perspect. Archit. 11 Archivaults always fall upon the impost. 1823 Nicholson Pract. Builder 311 When they [architraves] traverse the curve of an arch, they are called archivolts. 1862 Rawlinson Five Gt. Mon. I. vi. 360 Spanned by an arch above, the archivolte being covered with enamelled bricks.

Oxford English Dictionary

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