Definition

Noun: A wedge-shaped stone or brick that is one of the individual components used in the construction of an arch or a vault. Voussoirs are arranged in a curved pattern, with their tapered shape locking together to distribute weight and create a stable, self-supporting structure.

Usage

The word "voussoir" is a technical, specialized term used primarily in architecture, construction, and historical preservation. It refers specifically to the individual blocks that form an arch.

Examples

• The ancient Roman aqueduct is a marvel of engineering, with each voussoir perfectly cut to bear the immense weight.
• During the restoration of the cathedral, masons carefully numbered each voussoir before dismantling the damaged arch.
• The keystone is the central voussoir at the apex of the arch, which locks all the others into place.

Advanced Usage

• "Extrados" and "Intrados": These terms describe the outer and inner curves of an arch, respectively. The shape of each voussoir is defined by these curves.
• "Ring of voussoirs": This phrase refers to the complete, circular set of stones forming a full arch or vault.

Variants and Related Words

• Keystone (n): The central, often topmost, voussoir in an arch, which is the final piece placed and is crucial for the arch's stability.
• Springers (n): The lowermost voussoirs on either side of an arch, where the curve begins to rise from the vertical support (the impost).

Synonyms

• Arch stone
• Wedge block

Notes on Meaning

The term "voussoir" refers exclusively to the building block itself within the specific context of arched masonry. It does not describe the arch as a whole, the construction process, or the architectural style. Its meaning is highly specific and technical.

Noun

1. wedge-shaped stone building block used in constructing an arch or vault