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Letter
"D" Glossary
dado Middle register of a pedestal,
between the base and the cap or the lower zone of an interior
wall, when given a distinct treatment sometimes resembling
a pedestal in appearance.
deacon
A cleric ranking just below a priest in the Anglican, Eastern
Orthodox, and Roman Catholic churches or Protestant layperson
who assists the minister in various functions. A female deacon
is referred to as a deaconess.
depressed
arch
Flattened pointed arches whose radii are located within the
span of the arch, whether or not the centers are above, at,
or below the springing. Also called drop arches.
diagonal
rib
Slender stone moldings, or arched supports, called ribs arranged
in a diagonal formation and positioned along the groins (or
joins) of a vault, crossing in the center, used either to
mask the groins or to support or decorate the vault.
diaper
pattern
Designs composed of repeated geometric surface patterning
often forming a framework designed with forms such as lozenges
or formalized leaves.
diaconicum
In the Greek Church, the liturgical book specifying the functions
of the deacon.
diaconica
A vestry or sacristy in a Byzantine church used by the clergy
for preparation.
diocese
The district or churches under the jurisdiction of a bishop,
also called a bishopric.
diptych
Book-like paired panels hinged together used as devotional
objects. Diptychs may be made of wood, usually painted with
Christian subjects, or ivory, carved with Christian subjects.
dome
A vault covering for a space usually resembling a half sphere
or portions of a sphere, constructed such that they exert
equal thrust in all directions. Domes may have either a round
profile (The Pantheon) or a pointed profile (the dome of Florence
Cathedral). See also melon dome, pendentive dome, umbrella
dome.
donjon
The most securely fortified area of a castle, usually a tower,
and thus often used as the residence. Also called a keep.
drum (ref.
dome)
The vertical wall, circular or polygonal in plan, that supports
a dome.
drum pier
Monumental cylindrical support.
dwarf
gallery
Passageway through the exterior walls of buildings and open
to the outside through small-scale or slender arcades, found
mainly in Italian and German Romanesque architecture.
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