Glossary of Terms

A single- or multi-unit cuboid floor work, open on both short ends and with plexiglass-lined interiors; sometimes referred to as a tunnel work lined with plexiglass. This informal identifier references the Italian collector Gianni Agnelli, who owned an early work of this type dated 1969.

A horizontal wall work with an unbroken convex front, curving from top to bottom.

A multi-unit floor work comprised of large, identical rectangular frames, constructed of either U- or V-shaped metal beams. The frames, open along the long sides, are installed parallel to one another with the space between each frame equal to the depth of one individual unit unless otherwise noted.

Compound angle
A wall or floor work with an interior plane positioned so that each corner sits at a different distance from the work’s base.

A single-unit floor work with an interior “core” space created by an inset metal tube with flanges at both ends; the top plane and long sides are composed of transparent plexiglass.

Dayton legs
A wall work with five vertical elements, each thirty-six inches long, connected by a horizontal square tube. 

Discontiguous progression
A single work with multiple wall units, each unit having a different width but the same height and depth, installed in a horizontal configuration at specific intervals.

Double bullnose
A horizontal wall work measuring five by twenty-nine by twenty-four inches with convex sides, curving from top to bottom, and a flat front.

The infinite numerical sequence consisting of the integers 1, 1, 2, 3, 5, 8, 13,  … in which each number is the sum of the two immediately preceding. When the Fibonacci sequence is applied to a tube progression, the sequence of boxes begins with the smallest on the left to the largest to the right; in reverse order, the sequence of the boxes begins with the largest on the left and the smallest on the right.

Flange work
A floor work with an exterior horizontal flange around its perimeter, top, and/or bottom; a wall work with an exterior frontal, vertical flange.

Floor oval
A freestanding, single-unit work in metal that takes its informal identifying name from its shape when viewed from above.

Floor pans
A group of twenty-one individual works with unique internal configurations made in galvanized iron or stainless steel, each with exterior measurements of four by twenty-seven by twenty-three inches.

Floor work
Any work that sits on the floor.

Meter box
A wall work with exterior dimensions of fifty by one hundred by fifty centimeters, regardless of material or internal configuration.

Painted aluminum
Occasionally referred to as a Swiss piece or a multicolored work; refers to all painted aluminum works fabricated by Lehni AG, Studer AG, or Lascaux Conservation Materials Ltd. These works are constructed with bent metal rectangular pans of various lengths that are visibly screwed together. A painted aluminum work may contain one or more unpainted pans.

Painted bottom
A floor work that is open or partially open at the top and has a painted bottom.

Perforated ramp
A floor work made with perforated steel with exterior dimensions such that the top plane is slanted from a few inches at its highest point to the floor at its lowest.

Plexiglass bottom
A floor work that is open or partially open at the top and has a colored plexiglass bottom.

A wall work with a horizontal square tube that connects alternating solid forms and negative spaces. See “tube progression,” “square-front progression,” and “round-front progression” for specific types.

Raised top
A rectangular floor work with a top plane that is slightly higher than the sides, making it appear as if it were floating.

Recessed front
A rectangular wall or floor work with a front plane set back a specified distance from the front; often used in meter boxes and stacks.

Recessed top
A rectangular floor work with a top plane that is lower than the sides of the work, creating a vertical flange around the perimeter of the piece.

Ranch Office reliefs
A group of reliefs dated 1989 to 1993 that Judd installed in the Ranch Office, Marfa. All are made of Douglas fir plywood, either painted cadmium red light or left unpainted; some include found objects, some do not.

A three-dimensional work that projects a small distance from the face of a wall. The earliest reliefs date to 1961

Round-front progression
A wall work with convex forms, rounded from top to bottom, attached to the front face of a horizontal square tube; sometimes referred to as a bullnose progression.

Single stack
A misnomer; a single-unit wall work measuring six by twenty-seven by twenty-four inches, made and recorded as a discrete, unique work. It is not a unit subtracted from an existing small stack.

Site-related work
Also referred to as site-dependent, a work that has exterior dimensions that are inherently variable in relation to the site in which the work is placed and may have variable installation requirements dictated by the site’s dimensions.

Site-specific work
A work conceived for installation at a particular location only; it may be intended for temporary or permanent placement. Site-specific works do not have variable dimensions or locations.

Slant work
A floor or wall work with an interior plane that slants at a specified angle within four exterior walls.

Spice rack
A wall work in which a sixty-nine-inch-long horizontal square aluminum tube connects two painted plywood boxes attached at each end; each box measures sixteen and a half by nine by five inches.

Square-front progression
A wall work with a horizontal square tube with box forms attached to the front face.

A multi-unit, vertical wall work, most often having ten identical units installed with a specific interval (the negative space between each unit) equal to the height of one unit between them. The space between the floor and the bottom of the lowest unit is also equal to the height of one unit. There are two sizes of stacks: large stack, individual units measure nine by forty by thirty-one inches; small stack, individual units measure six by twenty-seven by twenty-four inches.

A wall or floor work with a shallow trough cut through its top plane. In a wall work, the trough runs the full depth of the top plane; in a floor work, its full length.

Tube progression
A wall work with a horizontal square tube with box forms and alternating spaces underneath.

A single-unit cuboid floor work open on both short ends.

A single-unit floor work with two metal end plates and long sides and top plane made of plexiglass; it is held together by a system of internal tension wires and turnbuckle connecters.

Wall work
Any work that is placed on the wall.

A type of wall object in a parallelogram or rectangular configuration based on twenty-seven unique patterns, shared identically for each group. Each wood-block is considered unique; they are painted or unpainted. These wood-blocks are differentiated from works in edition.

A stack unit with plexiglass affixed to the front and side planes.