In architecture, a bay is the space between architectural elements, or a recess or compartment. bay comes from "Old French…
An attic ladder (US) or loft ladder (UK) is a retractable ladder that is installed into the floor of an…
An astragal is a moulding profile composed of a half-round surface surrounded by two flat planes (fillets). An astragal is…
In architecture, an arris is the sharp edge formed by the intersection of two surfaces, such as the corner of…
An archivolt (or voussure) is an ornamental molding or band following the curve on the underside of an arch. It…
Araeosystyle (Gr. αραιος, "widely spaced", and συστυλος, "with columns set close together"), an architectural term applied to a colonnade, in…
An apron is a raised section of ornamental stonework below a window ledge, stone tablet, or monument.
An antefix (from Latin antefigere, to fasten before) is a vertical block which terminates the covering tiles of a tiled…
Ante-choir, the term given to the space enclosed in a church between the outer gate or railing of the rood…
An ambulacrum is an architectural term for the atrium, courtyard, or parvise in front of a basilica that is surrounded…
An alure (O. Fr., from aller, "to walk") or allure is an architectural term for an alley, passage, the water-way…
In architecture an accolade is an embellishment of an arch, found most typically in late Gothic architecture. One kind of…
An abat-son (usually plural abat-sons) is an architectural device constructed to reflect sound in a particular direction. Typically it takes…
A water table is a masonry architectural feature that consists of a projecting course that deflects water running down the…
A cottage window is a double-hung window — i.e., a window with two sashes sliding up and down, hung with…