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Glossary of Architectural Terms Used

  • arch – curved structure used as a support over an open space
  • architrave – beam resting directly on the tops of columns; the bottom section of the entablature
  • baluster – any of the singular posts of a railing
  • balustrade – row of columns supporting a railing
  • coffer – decorative sunken panel in a ceiling or dome
  • colonnade – series of columns set at regular intervals
  • column – cylindrical support consisting of base, shaft and capital (cap)
  • Corinthian – the most elaborate of the three orders of Greek architecture, distinguished by a bell-shaped capital with a design of acanthus leaves
  • cornice – the top section of the entablature; a horizontal molding projecting along the top of a building or wall
  • cupola – a small dome or similar structure on a roof
  • dais – raised platform at the end of a room or chamber
  • dome – roof formed by a series of rounded arches or vaults on a round or many-sided base
  • Doric – the oldest architectural style of ancient Greece; characterized by simplicity of form; fluted, heavy columns and simple capitals
  • entablature – a horizontal superstructure supported by columns and composed of architrave, frieze and cornice
  • fasces – bundle of rods bound about an ax; a sculpted or carved depiction of it; Roman symbol of power and authority
  • frieze – the horizontal band forming the middle section of the entablature; usually decorated with sculpture
  • guilloche – ornamental trim formed by intertwining bands
  • Ionic – Greek style of architecture characterized by ornamental scrolls on the capitals
  • lantern – open structure on a roof or in a tower or dome that admits light and air
  • mansard roof – a roof with two slopes on each of the four sides, the lower steeper than the upper
  • parapet – a low wall or railing on a balcony or bridge
  • pediment – a low-pitched gable or decorative triangular piece on the front of a building above a doorway or portico
  • pendentive bracket – vaulting area that serves to connect an angle of a square area enclosed by four arches with a dome resting upon the arches
  • pilaster – a rectangular support projecting slightly from a wall, treated architecturally as a column
  • plinth – the square block at the base of a column, pedestal or statue
  • porte cochere – driveway under or through a portion of a building
  • portico – a porch or covered walk consisting of a roof supported by columns
  • rotunda – the round hall or room surmounted by a dome
  • terra cotta – a hard brown-red earthenware, usually unglazed, used for ornamental facing
  • tympanum – recessed space enclosed by slanting cornices of a pediment
  • vault – an arched chamber
  • vestibule – small entrance hall of a building