The space (often triangular) between the outer curve of an arch (the extrados) and a straight-sided figure that bounds it; the space between two contiguous arches and a straight feature above them
The irregular triangular space between the curve of an arch and the inclosing right angle; or the space between the outer moldings of two contiguous arches and a horizontal line above them, or another arch above and inclosing them
Roughly triangular area on either side of an arch, bounded by a line running horizontally through its apex, a line rising vertically from the springing of the arch, and the exterior curve of the arch. When arches adjoin, the entire area between their crowns and springing line is a spandrel. If filled in, as is ordinarily the case, the result is a spandrel wall; in medieval architecture this was usually ornamented. In buildings of more than one story, the spandrel is the area between the sill of a window and the head of the window below it. In steel or reinforced-concrete structures, a deep spandrel beam may span across this area. The triangular area of space beneath a stair is also known as a spandrel
The space between the curves of two adjoining arches Also the triangular space between the curve of an arch and the rectangle formed by a molding Also the portion of an office building found between the head of one floor's windows and the sill of the next
A design motif located in the rug's corner inside the border Normally in a central medallion design, each of the four spandrels would depict a quarter of the medallion
1 A panel between the top of one window and the sill of another window on the story directly above it 2 An irregular, triangular wall segment adjacent to an arched opening