Art Glossary

Acrylic painting uses synthetic polymer emulsion as a binder. Learn how Pollock, Rothko, and Hockney adopted a mid-20th-century medium that dries in minutes and resists water.

Action painting is the gestural, physical application of paint pioneered by Pollock and de Kooning. Learn its history, key artists, and how to spot it.

Alla prima is wet-on-wet painting completed in a single session. From Frans Hals to Monet to Sargent, learn the history and technique of direct painting.

Alternative process photography uses 19th-century and experimental techniques like cyanotype, calotype, and chemigrams. Learn how contemporary artists revive these methods.

Anamorphosis is a projection technique where a distorted image resolves into a coherent picture from a specific viewpoint. From Holbein to Niceron, learn how it works.

Aquatint is an etching technique that produces tonal areas using powdered resin and acid. From Goya's Caprichos to modern printmakers, learn how it works.

An armature is the internal support structure for sculpture, made of wire, rods, or pipes. From Verrocchio to Degas, learn how sculptors use hidden skeletons.

An artist's proof is a print pulled outside the numbered edition, traditionally reserved for the artist. From Picasso and Mourlot to today's 10 percent rule, learn how APs work.

Assemblage is sculpture made from found objects and everyday materials. Learn its history from Picasso to Rauschenberg, key artists, and how it changed art.

Atmospheric perspective creates depth by making distant objects paler, bluer, and less detailed. Learn how Leonardo da Vinci codified it and how painters use it today.

Automatism is art made without conscious control, letting the unconscious guide the hand. From Andre Masson's automatic drawings to Pollock's drip paintings, learn how it works.

Blind contour drawing is an exercise where you draw without looking at the paper, training observation over production. From Nicolaides to Betty Edwards, learn its history.

Bokeh is the visual quality of blurred areas in a photograph. Learn its Japanese origins, how lens design shapes it, and how AI bokeh rendering is transforming mobile photography in 2026.

Bone black, or ivory black, is a carbon pigment made from charred animal bones. Used since antiquity, it remains one of the oldest and most enduring black pigments in art.

Bookbinding is the art of constructing books by hand, from Coptic sewing to exposed-spine structures. Learn its history, key practitioners, and modern revival.

A bozzetto is a small, rapidly modeled terracotta sketch used by sculptors to develop ideas in three dimensions. Learn how Bernini, Algardi, and Baroque sculptors used clay bozzetti.

Broken color places pure, unmixed strokes side by side to blend in the eye. Learn how Monet, Van Gogh, and Seurat used this technique for brighter, vibrating color.

The artist's brush applies paint to surface. Learn brush types (round, flat, filbert, fan), hair types (hog, sable, synthetic), and the history from ancient Egypt to today.

Calligraphy is the art of expressive writing across Chinese, Japanese, Islamic, and Western traditions. Learn its history, key practitioners, and modern revival.

The calotype was William Henry Fox Talbot's paper negative photographic process, introduced in 1841. Learn how it enabled reproducible prints and shaped photography's future.

Camaieu is painting in shades of a single color other than gray. From ancient Pompeii to Renaissance palaces to porcelain decoration, learn this monochrome technique.

The camera obscura is a dark chamber optical device that projected images for painters before photography. From Vermeer to Canaletto, learn how it shaped art.

A canvas panel is primed canvas glued to a rigid backing like MDF or hardboard. Learn its history from Impressionist plein air studies to modern mass-produced panels.

Canvas is the woven fabric surface used for oil and acrylic painting. Learn its history from 15th-century Venice to modern cotton duck, types, weights, and how to choose canvas.

A cartoon is a full-size preparatory drawing used to transfer a composition to fresco, tapestry, or panel. From Raphael's Vatican Cartoons to Leonardo's drawings, learn how they worked.

Carving is subtractive sculpting from solid materials like stone, wood, and ivory. Learn its history from prehistory to Michelangelo and how it works.

Casein is paint made from milk protein, used since ancient Egypt. Learn how Klimt, Warhol, and Native American artists used a fast-drying medium that dries hard and matte.

Chalk is a soft drawing material made from natural minerals: black shale, red iron oxide, and white calcite. Learn how Leonardo, Michelangelo, and Watteau used chalk and the trois crayons technique.

Charcoal is burnt organic matter used for drawing since prehistory. Learn vine vs compressed charcoal, techniques from blending to fixative, and artists from Da Vinci to Kathe Kollwitz.

Chiaroscuro is the use of strong light-dark contrast to model form and create drama. From Leonardo to Caravaggio to Rembrandt, learn how it shaped Western painting.

Chine-colle bonds thin paper to a heavier support during printing, adding color and texture. Learn its history, technique, and use by Matisse and Redon.

Clay is the primary modeling material for sculpture, fired into earthenware, stoneware, and porcelain. Used for over 30,000 years, it remains the most versatile and accessible sculptural medium.

Cold pressed paper is watercolor paper with a lightly textured surface, the most popular choice for watercolor. Learn how it works, its history, and why 80% of painters prefer it.

Collage is art made by assembling paper, photographs, and found materials. Learn its history from Picasso and Braque to Hannah Hoch and contemporary artists.

Color Field painting uses large expanses of flat color as the subject itself. Learn how Rothko, Newman, and Still pioneered this Abstract Expressionist style.

Concept art is visual development art for games, film, and animation. Learn its history from Disney's Snow White to AI-assisted workflows in 2026.

A conservator preserves and repairs artworks using science and craft. From Renaissance restorers to nanotechnology, learn how these professionals save paintings, sculptures, and more.

A contact print is a photographic print made with the negative directly touching the paper. Learn how it works, its history, and why large-format photographers still prize it.

A contact sheet is a print of all negatives from a roll of film, used for editing and selection. From LIFE magazine to Peter Hujar's archive, learn its history and purpose.

Conté crayons are compressed graphite or charcoal mixed with clay, invented in 1795 during the Napoleonic Wars. Learn how Seurat used them and why artists still choose them over soft pastels.

Contour drawing is the technique of rendering a subject entirely through its outlines, capturing form and volume without shading. From Picasso to Matisse, learn how it works.

Creative coding is programming for artistic expression, not utility. Learn its history from Processing to p5.js, key artists, and how code became a creative medium.

Cross hatching is the drawing technique of overlapping sets of parallel lines to build darker values. From Durer to Rembrandt, learn how it creates tone and form.

The cyanotype is a cameraless photographic process producing white silhouettes on Prussian blue. Invented by Herschel in 1842, learn how Anna Atkins made the first photo book.

3D modeling is the process of creating three-dimensional objects in digital space. Learn its history from the 1975 Utah teapot to Meta's SAM 3D and Roblox's AI Build in 2026.

The daguerreotype was the first commercially successful photographic process, announced in 1839. Learn how it works, its history, and why its images still astonish.

A darkroom is a light-controlled room for developing and printing photographic film. Learn its history, chemistry, equipment, and how the analog revival is fueling new darkrooms in 2026.

Depth of field is the range of distance in a photograph that appears acceptably sharp. Learn how aperture, focal length, and sensor size control it, from f/64 to computational bokeh.

Divisionism is Seurat's theory of separating colors into individual strokes for optical mixing. Learn its history, key artists, and how it shaped modern art.

Doodle art is spontaneous, often meditative drawing that ranges from notebook margins to structured Zentangle and mandala patterns. Learn its history and practice.

Dry brush is a painting technique using minimal paint on a dry brush to create broken, textured strokes. From Durer to Wyeth, learn how it works.

Drypoint is an intaglio print made by scratching a metal plate with a needle. The burr creates a rich, velvety line that wears out fast. Learn how Rembrandt used it.

The easel is the upright support that holds a painting while the artist works. Learn its history from ancient Egypt to modern studio designs, types, and how to choose one.

An edition is a fixed set of identical prints pulled from a single plate, screen, or digital file. From Rembrandt to Ai Weiwei, learn how editions work and why numbering matters.

Encaustic is painting with pigmented hot beeswax, an ancient technique used for Egyptian mummy portraits. Learn how the Fayum painters and Jasper Johns used molten wax as paint.

Engraving is an intaglio print made by carving lines directly into a metal plate with a burin. From Schongauer to Durer to Goya, learn how it shaped printmaking.

Etching is an intaglio print made by drawing through wax on a metal plate and bathing it in acid. Learn how Rembrandt, Goya, and Whistler used it to transform printmaking.

Fat over lean is the oil painting rule that each layer should contain more oil than the one beneath. Learn the science behind why it prevents cracking and delamination.

Film photography uses light-sensitive chemical emulsions on plastic or paper. Learn how a medium declared dead in 2012 is thriving again, with 312 new labs opening in 2025 alone.

Fixative is a spray applied over charcoal, pastel, and pencil drawings to prevent smudging. From Loriot's 18th-century secret to modern acrylic sprays, learn its history.

Foreshortening compresses objects along the line of sight to create perspective depth. Learn how Mantegna, Michelangelo, and Caravaggio used this technique.

A found object is an everyday item an artist selects and presents as art. Learn the history of objet trouvé from Duchamp's Fountain to Tracey Emin's My Bed.

Fresco is painting on wet plaster so the pigments bond with the wall. Learn how Michelangelo, Raphael, and Giotto used this ancient technique.

Generative art is art made by algorithmic systems rather than by hand. Learn how artists from Vera Molnar to Tyler Hobbs use code to create art that no human could draw.

Gesso is the white primer applied before painting to seal and prepare the surface. Learn its history from medieval gypsum grounds to modern acrylic gesso and how to use it.

Gesture drawing is rapid drawing that captures the movement and essence of a figure. Learn its history, key practitioners, and how to practice it from Kimon Nicolaides to today.

Glazing is the application of thin transparent oil paint layers over dry paint to create luminosity and depth. From Van Eyck to Rembrandt, learn how it works.

Glitch art turns digital errors into artistic material. Learn how artists from Rosa Menkman to contemporary practitioners use corrupted data, codec failures, and AI hallucinations.

Gold leaf is the application of thin gold sheets as surface or background in painting. Learn gilding techniques from medieval icons to Renaissance altarpieces.

Gouache is opaque watercolor made with heavier pigment and chalk filler. Learn how Durer, Goya, and Matisse used a medium that lets you paint light over dark on paper.

Graphite is a crystalline carbon used for drawing since the 1500s. Learn graphite grades from 9H to 9B, its Borrowdale origins, and how artists use it today.

The grid is a tool for transferring and scaling images accurately. From Alberti's veil to Durer's perspective machines to Chuck Close, learn its history and use.

Grisaille is painting entirely in shades of gray, often to simulate stone sculpture. From Van Eyck to Goya, learn how this monochrome technique shaped Western art.

Halation is the optical glow that appears where light meets dark in a painting. Learn how Baroque painters used dark halos and warm edges to make light appear to radiate.

Hard-edge painting features abrupt transitions between flat color areas. Learn how Frank Stella, Ellsworth Kelly, and California painters defined this style.

Hatching is the drawing technique of using closely spaced parallel lines to create tonal value. From Durer to Rembrandt, learn how this fundamental technique works.

Hot pressed paper is watercolor paper pressed through heated rollers for a smooth surface. Learn how it works, its history, and why botanical illustrators and realists prefer it.

Hyperrealism is painting and sculpture so detailed it seems more real than reality. Learn its origins from photorealism, key artists, and how to spot it.

Illustration board is paper mounted to a rigid backing, creating a warp-resistant surface for drawing and painting. Learn its history, types, and why illustrators and plein air painters use it.

Illustration is the art of creating images that communicate, accompany, or respond to text. Learn its history from medieval manuscripts to digital media.

Impasto mediums are additives that thicken oil and acrylic paint for visible texture. Learn what they contain, how they work, and how Rembrandt and Van Gogh used them.

Impasto is paint applied so thickly it catches light and casts shadows. Learn how Van Gogh, Rembrandt, and Auerbach used this textured technique in oil painting.

Imprimatura is a thin toned layer applied to a painting support before painting begins. Learn its history from the Renaissance to Rubens and why it matters.

Ink wash is painting with ink diluted in water to create tonal gradations. Learn how Wang Wei, Sesshu Toyo, and contemporary artists use a medium where every stroke is permanent.

Intaglio is the printmaking family where ink sits in recessed lines below the plate surface. From engraving to etching to mezzotint, learn how it works.

Kirigami is the Japanese art of cutting and folding paper to create three-dimensional forms. Learn its history, key practitioners, and engineering applications.

Large format photography uses view cameras and individual sheets of film, 4x5 inches or larger. From Watkins and Adams to 2026's new cameras, learn the tradition.

Leather tooling is the art of carving and stamping designs into damp vegetable-tanned leather. Learn its history from Islamic bookbinding to Western saddlery.

Letterpress is relief printing from movable type, invented by Gutenberg in 1440. Learn its history, technique, and contemporary revival in fine art printing.

Linocut is relief printmaking from carved linoleum, cheaper and easier than woodcut. Learn its history from 1905 to Picasso's reduction technique and today.

Lithography prints from a flat stone using the resistance between oil and water. From Senefelder to Daumier to Toulouse-Lautrec, learn how it transformed printmaking.

Long exposure photography uses extended shutter speeds to blur moving elements while keeping stationary elements sharp. Learn its history from Daguerre to contemporary practice.

Lost-wax casting, or cire perdue, is the ancient bronze casting method used from 4000 BCE to the Renaissance. Learn its history, technique, and key sculptors.

A mahl stick is a padded stick that steadies a painter's hand while working on detail. Learn its history from 16th-century studios to Vermeer and why some painters still use one.

A maquette is a scale model for a sculpture or architectural project. From Rodin's Burghers of Calais to contemporary public art commissions, learn how maquettes shape the final work.

Marouflage is the technique of adhering a painted canvas to a wall or ceiling using adhesive. From Renaissance murals to modern conservation, learn how it works.

A painting medium is any substance added to paint to change its properties. From stand oil and dammar to modern alkyd gels, learn how mediums shape oil painting.

Medium format photography uses 120/220 roll film for negatives larger than 35mm but smaller than large format. From Rolleiflex to Hasselblad to 2026's new cameras, learn the format.

Mezzotint is an intaglio technique that works from dark to light, roughening a copper plate and smoothing areas for tone. Learn its history from von Siegen to today.

Modeling is additive sculpting with soft materials like clay and wax. Learn its history, technique, and use from ancient Egypt to Rodin and beyond.

Monotype is a printmaking technique that produces a single unique impression from a painted plate. From Castiglione to Degas to Chagall, learn how it works.

Mosaic is art made from small pieces of stone, glass, or ceramic set in mortar. From Roman floors to Byzantine domes, learn how mosaic works and who made it.

Motion graphics is graphic design set in motion. Learn its history from Saul Bass and John Whitney to After Effects, key artists, and how animation became design.

Naples yellow is lead antimoniate, one of the oldest synthetic pigments known. First used in Egyptian glass around 1500 BCE, it shaped painting from the Renaissance to the 19th century.

A photographic negative is an image with reversed tones on film or glass, from which positive prints are made. Learn its history from Talbot to 2026, and why it still matters.

Negative space drawing shifts focus from the subject to the shapes around it. Learn its history from Japanese ma to Betty Edwards and how it transforms composition.

Oil painting is pigment suspended in drying oil, most often linseed. Learn how Van Eyck, Rembrandt, and Monet used the slow-drying medium that dominated European art for 500 years.

Optical mixing is the eye's blending of adjacent colors placed side by side. From Seurat's pointillism to Monet's brushwork, learn how it works.

Origami is the art of folding paper into representational and abstract forms without cutting. Learn its history from Japanese ceremony to computational design.

The palette knife is a flat-bladed tool for mixing and applying paint. Learn its history from medieval amassettes to Van Gogh, Courbet, and contemporary impasto painting.

The palette is the flat surface where painters mix colors before applying them. Learn its history, shapes, materials, and how artists from Vermeer to Monet arranged their paints.

A painting panel is a rigid wood or composite surface for painting, the dominant support before canvas. Learn its history from Byzantine icons to modern MDF, types, and how to choose one.

Papercutting is the art of creating decorative images by cutting from a single sheet of paper. Learn its history from Chinese jianzhi to Dutch knipkunst.

Pastel is a stick of pure pigment held together with minimal binder. Learn how Degas layered pastels with fixative, how La Tour built portraits in the 18th century, and why pastel blurs drawing and painting.

Patina is the surface color and texture that forms on metal through age, oxidation, or chemical treatment. Learn how sculptors from Cellini to Moore used it intentionally.

Pen and ink is drawing with liquid ink applied through a nib. Learn about iron gall ink, quill and reed pens, steel dip pens, and how Rembrandt, Van Gogh, and Picasso used ink for permanent, expressive line.

The pencil is graphite mixed with clay, encased in wood. Learn pencil grades from 9H to 9B, the history from 1564 Borrowdale graphite to Conté's clay process, and how artists use them.

A pentimento is a visible trace of a changed composition beneath a painting's surface. Learn how X-ray and infrared imaging reveal artists' revisions from Rubens to Ensor.

Photogravure etches photographic images into copper plates and prints them in ink. Learn its history from Talbot to Stieglitz and why it still matters today.

Photorealism is painting that mimics photography with extreme precision. Learn how Chuck Close, Richard Estes, and Ralph Goings defined this American movement.

Planographic printing prints from a flat surface using chemical separation, not carved depth. From lithography to offset, learn how it works and why it matters.

Plaster is calcium sulfate used for casting sculpture and making molds since ancient Egypt. From death masks to Renaissance reliefs to Rodin's models, plaster is sculpture's most versatile intermediate.

Plein air is painting outdoors directly from nature. Learn how the paint tube, Valenciennes, Constable, and Monet turned outdoor observation into a revolution in painting.

Pointillism is Seurat's technique of applying small dots of pure color that blend in the viewer's eye. Learn its history, key artists, and how to spot it.

A predella is the narrow base panel of an altarpiece, painted with small narrative scenes. From Duccio to Signorelli, learn how these overlooked panels shaped Renaissance art.

Procedural generation creates content algorithmically rather than by hand. Learn its history from Elite (1984) to AI-driven PCG in Unreal Engine 5 and Roblox Build in 2026.

Projection mapping projects video onto three-dimensional surfaces, turning buildings into screens. Learn its history, key artists like Refik Anadol, and how it works.

Quilting is the art of stitching layers of fabric into pictorial and patterned textiles. Learn how Gee's Bend quilters and Bisa Butler turned a domestic craft into fine art.

Rag paper is paper made from cotton or linen rags, valued for its archival quality and strength. Learn its history from medieval China to modern watercolor paper and why it outlasts wood pulp.

Raster art stores images as grids of pixels. Learn its history from Russell Kirsch's 1957 scan to AI upscaling and Texel Splatting for 3D pixel art in 2026.

Red chalk, or sanguine, is an iron oxide drawing material used since the Renaissance. Learn how Leonardo invented red-on-red, how Watteau mastered trois crayons, and why this warm medium dominated 18th-century drawing.

Relief printing is the oldest printmaking family, printing from a raised surface. From woodcuts to linocuts to Japanese mokuhanga, learn how it works.

3D rendering converts 3D models into 2D images. Learn its history from rasterization to path tracing, and how Capcom and NVIDIA brought real-time path tracing to games in 2026.

Repousse is hammering malleable metal from the reverse side to create relief designs. Learn its ancient history, technique, and famous examples.

Rough paper is watercolor paper with the heaviest texture, left to dry with minimal pressing. Learn how it creates dramatic granulation, its history, and why landscape painters prefer it.

Sap green is a yellow-green pigment made from buckthorn berries, used in medieval manuscripts and 18th-century watercolors. Its poor lightfastness led to its replacement by modern pigment mixtures.

Screen printing pushes ink through a mesh screen onto paper or fabric. From Warhol's Marilyn to protest posters, learn how serigraphy became a fine art medium.

Scumbling is dragging thin broken layers of opaque paint over a darker dry layer for texture, haze, and soft light. From Titian to Turner, learn how it works.

Secco is painting on dry plaster using organic binders. Less durable than buon fresco but more flexible. Learn its history, techniques, and key examples.

Sfumato is Leonardo da Vinci's technique of gradual tonal blending with no visible lines. Learn how he used it in the Mona Lisa and Virgin of the Rocks.

Sgraffito is scratching through a surface layer to reveal a contrasting color beneath. Learn its history from Renaissance facades to pottery to contemporary painting.

Shaders are programs that control how 3D surfaces appear under light. Learn their history from RenderMan to WebGPU TSL, and how neural shaders and DLSS 5 are reshaping rendering in 2026.

The silver gelatin print is the standard black-and-white photographic process of the 20th century. Learn its history, chemistry, and why it defined fine art photography.

Silverpoint is drawing with a silver stylus on a specially prepared surface, leaving delicate gray lines that oxidize to warm brown. Learn its history from Leonardo to today.

Solarization is the partial reversal of photographic tones caused by re-exposing a developing image to light. Learn its history from Sabatier to Man Ray and Lee Miller.

Stained glass is colored glass assembled in lead frames to create images in windows. From Chartres to Tiffany, learn how this 1,000-year-old art form works.

Stippling is the art of building value and texture with dots. Learn its history from Renaissance engraving to scientific illustration and how it differs from pointillism.

Storyboarding is sequential drawing for film and animation pre-production. Learn its history from Disney to the AI storyboarding controversy of 2026.

A stump, or tortillon, is a rolled paper tool used to blend charcoal, graphite, and pastel. Learn the difference between stumps and tortillons, how to use them, and why they give artists precise control over tonal transitions.

Sumi-e is Japanese ink wash painting using black ink, brush, and paper. Learn its history from Chinese origins through Sesshu to contemporary mindfulness practice.

Tapestry is a woven pictorial textile where the image and fabric are inseparable. Learn how the medium evolved from medieval wall hangings to contemporary art by Melissa Cody and Sarah Rosalena.

Tattooing is the art of inserting ink into skin to create permanent images. Learn its history from Indigenous traditions to contemporary fine art crossover.

Tempera is paint made with egg yolk as a binder, the dominant medium in European painting before oil. Learn how Botticelli, Fra Angelico, and Andrew Wyeth used this ancient technique.

Tenebrism is Caravaggio's extreme chiaroscuro, where darkness dominates and light cuts through like a spotlight. Learn its history, artists, and how to spot it.

Thumbnail sketches are small, rapid compositional studies that save time and prevent structural failures. Learn their history from Renaissance esquisses to concept art.

Tonal drawing builds form from patches of light and shadow rather than lines. Learn its history from Leonardo to Velazquez and how it differs from linear drawing.

Trompe l'oeil is the art of visual deception, painting objects so realistically they appear to exist in real space. From Pompeii to Pere Borrell del Caso, learn how it works.

Underpainting is the foundational layer beneath a painting's surface. Learn about grisaille, verdaccio, dead coloring, and how Vermeer and Rembrandt used it.

Vector art uses mathematical paths instead of pixels to create infinitely scalable graphics. Learn its history from Ivan Sutherland's 1963 Sketchpad to AI-generated SVG in 2026.

Verdaccio is a greenish underpainting used to create lifelike flesh tones. Learn how Renaissance painters from Giotto to Michelangelo used green earth beneath warm skin colors.

A viewfinder is a frame artists use to isolate and compose a scene. From Klimt's cardboard cutout to modern adjustable tools, learn how viewfinders shape composition.

Washi is traditional Japanese paper handmade from kozo, mitsumata, and gampi fibers. Learn its thousand-year history, how it is made, its role in art and conservation, and why it lasts.

Watercolor paper is thick, absorbent paper designed for water media. Learn its history, cotton vs. wood pulp fibers, weights from 90 lb to 300 lb, and how to choose the right surface.

Watercolor is transparent paint made of pigment and gum arabic, applied with water on paper. Learn how Durer, Turner, and Homer used a medium that rewards directness and punishes hesitation.

Wax is a modeling material and casting intermediate used in sculpture since ancient Greece. From lost-wax casting to anatomical models to death masks, wax has shaped art for 2,500 years.

Wet-on-dry is applying fresh paint over a dried layer for sharp edges and controlled building. Learn how oil and acrylic painters use it for glazing and detail work.

Wet-on-wet is painting into still-wet paint so colors blend on the surface. Learn how oil paint's slow drying made this technique central to alla prima and plein air.

Wood engraving is fine relief printing from end-grain boxwood, developed by Thomas Bewick in the 18th century. Learn its history, technique, and key artists.

Woodcut is the oldest printmaking technique, carving images into wood blocks for relief printing. Learn its history from China to Durer to Hokusai's ukiyo-e.

The Zone System is Ansel Adams and Fred Archer's method for controlling exposure and development to translate light into specific print tones. Learn how it works and why it still matters.