D - Category
- Dais
- Damascening
- Damper
- Dentil
- Diaper
- Distyle
- Dogtooth
- Dolmen
- Dome
- Doric Column
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A raised platform for a cord to overlook his subjects. It is the stand that is used in the Olympics to award medals.
An adjustable metal plate controlling convection currents in a fireplace. 
A small rectangular block used in a series forming a molding under a cornice.
A pattern formed by small, repeated geometrical motifs set adjacent to one another, used to decorate stone surfaces in architecture and as a background to illuminations in manuscripts, wall painting or panel painting.
An ornamental motif consisting of a square, four-leafed figure, the center of which projects in a point. It was very popular in Early Gothic architecture.
Type of single chamber megalithic tomb usually consisting of three or more upright stones supporting a large flat horizontal capstone. Dolmens were usually covered with earth or smaller stones to form a barrow, though in many cases that covering has weathered away, leaving only the stone “skeleton” of the burial mound intact.
A vaulted structure with an elliptical plan, usually a cross-section of a sphere, used to distribute an equal thrust in all directions.