Art Glossary

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.

An appraisal is a documented, defensible opinion of an artwork's value for a stated purpose. Learn about USPAP standards, types of value, the IRS Art Advisory Panel, and what it costs.

Appropriation art borrows existing images and gives them new meaning. From Sherrie Levine to Richard Prince, learn how this strategy reshaped art and copyright law.

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.

An atelier is an artist's studio and the studio-based teaching model that trained artists for centuries. From Rembrandt to Beaux-Arts de Paris, learn how it worked.

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.

Balance in art is the distribution of visual weight across a composition. Learn about symmetrical, asymmetrical, and radial balance from Raphael to Pollock, with research.

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.

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.

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 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.

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.

Chinese landscape painting (shanshui) uses ink and brush to depict mountains and water as a meditative practice. Learn about Fan Kuan, Guo Xi, and the art of emptiness.

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.

Composite photography merges multiple negatives or digital images into one picture. From Rejlander to Photoshop, learn how this technique shaped art and propaganda.

Composition is how an artist arranges visual elements within an artwork. Learn how composition works from Raphael to Rothko, with principles, examples, and research.

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.

Contrast in art is the placement of opposing visual elements to create tension and focus. Learn how Caravaggio, Vermeer, and Rothko used value, color, and texture contrast.

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.

Digital photography captures images on electronic sensors instead of film. Learn how the medium evolved from a 0.01-megapixel prototype in 1975 to computational photography and AI.

Documentary photography chronicles real events, people, and conditions. From Jacob Riis and Dorothea Lange to Diane Arbus and Sebastiao Salgado, learn its history and power.

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

Dreamtime is the Aboriginal Australian concept of creation, when Ancestral Beings shaped the land. From rock art to Papunya paintings, learn how Dreaming stories become images.

The Dutch Golden Age (1580-1670) produced Rembrandt, Vermeer, and a revolution in genre painting, landscape, and still life. Learn how Protestant Holland reshaped what art could depict.

Embroidery is decorating fabric with needle and thread. From Opus Anglicanum to contemporary fine art, learn its history, stitches, and artists.

Emphasis in art is the creation of a focal point that draws the viewer's attention. Learn how artists from Leonardo to Vermeer used contrast, isolation, and placement.

Exposure is the amount of light reaching the sensor or film when a photograph is made. Learn the exposure triangle, stops, the Zone System, and how exposure works in 2026.

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.

Fine art photography uses the camera as an expressive tool, not a recording device. From Stieglitz and Weston to Sugimoto and Sherman, learn what makes a photograph art.

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

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.

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.

Greek classical art gave the world the idealized nude, contrapposto, and mathematical proportions of the human body. Learn how Polykleitos, Phidias, and Praxiteles shaped Western art.

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.

Happenings were performance events coined by Allan Kaprow in 1958 that blurred the line between art and life. Learn their history, key artists, and legacy.

Harmony in art is the pleasing agreement between elements that makes a composition feel whole. Learn how color, shape, and proportion create harmony from Raphael to Rothko.

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.

Egyptian hieroglyphs are a pictographic writing system used for over 3,000 years. From the Rosetta Stone to AI recognition, learn how hieroglyphs bridge writing and visual art.

The High Renaissance (1490-1527) produced Leonardo's Mona Lisa, Michelangelo's Sistine Chapel, and Raphael's School of Athens. Learn how these masters perfected Renaissance art.

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.

The Hudson River School was America's first art movement, painting wilderness from the Catskills to the Andes. Learn about Thomas Cole, Frederic Church, and Bierstadt.

Iconography is the study of symbols and their meaning in art. From medieval saints to modern eye-tracking, learn how to decode visual language.

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

Indigenous Australian art spans 65,000 years from rock art to dot painting. Learn about the Papunya Tula movement, Emily Kngwarray, and the Dreamtime tradition.

Installation art creates environments the viewer enters rather than observes. Learn its history from Duchamp to Saraceno, key artists, and how it changed art.

Japonisme is the Western fascination with Japanese art after 1850. From Whistler to Van Gogh to Monet, learn how ukiyo-e prints reshaped European painting.

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

Landscape painting depicts natural scenery as a subject in its own right. From Song Dynasty shanshui to Constable and Turner, learn how nature became art.

Landscape photography uses the camera to capture natural scenery as art. From Watkins and Adams to Sternfeld and Misrach, learn its history, masters, and evolution.

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.

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

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.

A mandorla is an almond-shaped halo enclosing the entire body of Christ or the Virgin Mary. Learn its Byzantine origins, its role in Romanesque art, and its theological meaning.

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.

Mass in art is the perceived visual weight of elements in a composition. Learn how size, color, position, and texture create visual heaviness from Rembrandt to Rothko.

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.

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.

Movement in art is the implied or actual motion that guides the viewer's eye through a composition. Learn how artists from Raphael to Pollock create visual movement.

Mummy brown was a brown pigment made from ground Egyptian mummies, used by European painters from the 16th to the 19th century. Discontinued in 1964 when the supply of mummies ran out.

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 is the area around and between subjects in an artwork. Learn how Matisse, Escher, and Hokusai used it, from Japanese ma to Gestalt figure-ground.

Nihonga is modern Japanese-style painting using mineral pigments and animal glue. Learn about Yokoyama Taikan, Uemura Shoen, and Higashiyama Kaii.

A nimbus is the circular halo around a sacred figure's head in art. From Roman emperors to Byzantine icons to Renaissance altarpieces, learn its history and variations.

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

Orphism was the movement that turned color into pure abstraction. From Delaunay's disks to Kupka's fugues, learn how Apollinaire's forgotten ism shaped modern painting.

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.

Patronage is the financial support of artists by institutions or individuals. From Medici Florence to papal Rome, learn how patrons shaped what art got made.

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.

Performance art uses the artist's body as the medium. From Abramovic's endurance tests to Kaprow's Happenings, learn how live action became a visual art form.

Photography as fine art uses the camera as an artistic tool. From Stieglitz and Pictorialism to Sherman and Sugimoto, learn its history and key artists.

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.

Photomontage combines multiple photographs into a single composite image. Learn its history from Victorian tricks to Dada and Soviet propaganda to AI image generation in 2026.

Pictorialism was the movement that fought to make photography a fine art. Learn how Stieglitz, Steichen, and Cameron used soft focus and darkroom craft to rival painting.

Pixel art uses individual pixels as the building blocks of images. Learn its history from early video games to 2026 gallery exhibitions and key artists.

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.

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.

Portrait photography uses the camera to capture the human face and presence as art. From Nadar and Cameron to Avedon, Arbus, and Opie, learn its history and masters.

Postmodernism rejected originality and embraced appropriation, irony, and reference. From Sherrie Levine to Cindy Sherman, learn how it challenged modernism's rules.

The Pre-Raphaelite Brotherhood rejected academic painting and revived medieval honesty, intense color, and naturalistic detail. From Rossetti to Millais to Burne-Jones, learn how it worked.

Primitivism is the Western borrowing from non-Western and tribal art. From Gauguin to Picasso to the 1984 MoMA show, learn its history and why it is contested.

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

Propaganda posters use graphic design for political persuasion. Learn their history from WWI to Soviet propaganda to contemporary Ukrainian resistance posters, key artists, and techniques.

Proportion in art is the size relationship between elements. Learn about the Egyptian canon, Polykleitos, Vitruvian Man, the golden ratio, and how artists use proportion.

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.

The Renaissance transformed Western art from 1400 to 1600 through linear perspective, humanism, and classical revival. Learn how Masaccio, Leonardo, Michelangelo, and Raphael reshaped painting.

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.

Rhythm in art is the repetition of visual elements at intervals to create movement. Learn about regular, flowing, alternating, and progressive rhythm from Monet to Pollock.

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.

The rule of thirds divides the frame into nine equal rectangles and places key elements along the lines or intersections. Learn its history, how artists use it, and what research says.

The Salon des Refuses of 1863 exhibited works rejected by the Paris Salon jury. Manet, Whistler, and Cezanne showed there. Learn how it launched modern art.

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.

Scale in art is the size of a work or its elements relative to the viewer. Learn how scale shapes meaning from Egyptian colossi to Serra's steel walls, with research.

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.

Semiotics studies how images communicate through signs and symbols. From Saussure's signifier and signified to Barthes's mythologies, learn how to decode visual meaning in art.

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.

Shape is a flat area surrounded by edges or outline. From Mondrian's geometric grids to Matisse's organic cut-outs, learn how shape works in art.

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.

Stereoscopy creates 3D images using paired photographs. Learn its history from Wheatstone's 1838 stereoscope to Victorian card views to VR and AI-driven 3D conversion in 2026.

Street photography is candid photography in public spaces. From Cartier-Bresson's decisive moment to Bruce Gilden's flash confrontations, learn its history, ethics, and practice.

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.

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.

Textile art is art made from fibers, yarns, and fabrics using weaving, tapestry, and construction. From Anni Albers to contemporary practice, learn its history.

The decisive moment is Henri Cartier-Bresson's concept of capturing the instant when form and meaning align. Learn its history, its masterworks, and its relevance in 2026.

Tooth is the surface roughness of paper, canvas, or panel that grips pigment. Learn why pastelists, watercolorists, and oil painters depend on tooth for adhesion and layering.

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.

Typography is the art of arranging type and letters. Learn its history from Gutenberg to variable fonts and generative typography exhibitions in 2026.

Ukiyo-e are Japanese woodblock prints depicting the floating world of Edo. Learn how Hokusai, Hiroshige, and Kuniyoshi shaped a mass medium that changed Western art.

Ultramarine is the deep blue pigment ground from lapis lazuli, once worth more than gold. Learn its history, how artists used it, and why synthetic versions changed painting.

Unity in art is the sense that all elements belong together in a single composition. Learn how Gestalt principles, color, and structure create unity from Raphael to Rothko.

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.

Video game art treats games as artistic expression. Learn how museums from the Barbican to Tokyo now exhibit games as art, with Capcom and MoMA leading the way.

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.

Zinc white is a semi-transparent white pigment developed as a non-toxic alternative to lead white. Learn its history, why it causes conservation problems, and how artists used it.

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.