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The soffit of a house.


From French soffite, from Italian soffitto, from sof- (under) + past participle of figgere (to fix).



soffit (plural soffits)

  1. (architecture) The visible underside of an arch, balcony, beam, cornice, staircase, vault or any other architectural element.
    • 1983, Monte Burch, Building Small Barns, Sheds & Shelters‎, page 110
      If the soffit is to be sloping, simply attach the soffit board(s) to the underside of the rafters, butting the edges tight against the fascia board in front and the barn siding in the back.
  2. (pipe technology) The top point of the inside open section of a pipe or box conduit.
    The elevation of the pipe soffit is 10.4 meters above mean sea level.

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