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.

Aesthetic experience is the subjective encounter with art that produces pleasure, meaning, and emotional response. From Kant to Dewey to neuroscience, learn the theory.

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.

Analogous colors sit next to each other on the color wheel, creating natural harmony. From Monet's water lilies to autumn landscapes, learn how artists use them.

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.

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.

A binder is the substance that holds pigment particles together and adheres them to a surface. From animal glue to linseed oil to acrylic, learn binder history and types.

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.

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.

The canon of proportions is a system of ideal human measurements. From Polykleitos's Doryphoros to Leonardo's Vitruvian Man, learn how artists defined the perfect body.

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 cartouche is an oval or scrolled frame enclosing names, coats of arms, or decorations. From Egyptian hieroglyphs to Renaissance ornament to Baroque maps, learn its history and uses.

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.

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 temperature is the perceived warmth or coolness of a color. From Caravaggio's warm shadows to Rothko's cool fields, learn how it works in art.

Color is the visual perception of different wavelengths of light. From Newton's spectrum to the Munsell system, learn how color works in art.

Complementary colors sit opposite each other on the color wheel and create maximum contrast. From Monet to Van Gogh, learn how artists use this powerful pairing.

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

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.

Cool colors are blues, greens, and purples. From Whistler's nocturnes to Rothko's blue fields, learn how cool colors recede, calm, and create depth in art.

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.

Digital art is art made with computers and digital tools. Learn how artists from Vera Molnar to Refik Anadol turned code, pixels, and AI into a fine art medium.

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.

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.

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.

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.

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.

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.

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.

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

Form in art refers to three-dimensional objects with height, width, and depth. From Michelangelo's David to Cubist painting, learn how form works.

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.

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.

The golden ratio is approximately 1:1.618, a proportion used in art and architecture for millennia. From the Parthenon to Le Corbusier, learn what research says about its aesthetic power.

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.

The ground is the preparatory layer applied to a painting support before painting. From medieval gesso to modern acrylic primer, learn its history, types, and function.

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.

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.

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.

Hue is the name of a color: red, yellow, green, blue. From Newton's 1666 prism experiment to Munsell's color system, learn how hue works in art and perception.

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 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.

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.

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

Lightfastness measures how well a pigment resists fading under light. Learn how the Blue Wool scale, ASTM ratings, and microfade testing protect art from irreversible color loss.

Line is a point in motion, the most basic element of visual art. From cave drawings to Picasso's contour drawings, learn how line works and why it matters.

Linear perspective is the geometric system for depicting depth on a flat surface. Learn how Brunelleschi, Alberti, and Masaccio revolutionized painting in the 1420s.

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

Linseed oil is the drying oil that binds pigment in oil paint. From Van Eyck to Rembrandt to modern conservation science, learn how it works and why it matters.

Local color is the actual color of an object in neutral light, unaffected by shadows or reflections. Learn how painters from Cezanne to Hopper used it.

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 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.

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.

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

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.

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.

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.

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.

One-point perspective uses a single vanishing point to create the illusion of depth. Learn how Masaccio, Raphael, and Perugino used it to organize space and meaning.

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.

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.

Pattern in art is the repetition of visual elements across a surface. From Islamic tessellations to Op Art, learn how pattern works and why it matters.

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.

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.

Pictorial space is the illusion of three-dimensional depth created on a flat surface. Learn how artists from Brunelleschi to Cezanne manipulated space in painting.

The picture plane is the imaginary flat surface of a painting, Alberti's open window. Learn how it shaped Renaissance art and how modern painters broke it open.

Pigment is the colored substance used in paint, from prehistoric ochre to synthetic cadmiums. Learn its history, chemistry, types, and why some pigments last centuries.

A portrait is a likeness of a specific person. From Fayum mummies to AI-generated faces, learn the history, types, and purpose of portraiture.

Positive space is the area occupied by the subject in an artwork. From Renaissance portraits to Calder mobiles, learn how artists use it to direct attention and create balance.

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.

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.

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.

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

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.

Saturation is the intensity or purity of a color. From Matisse's red to Whistler's muted nocturnes, learn how saturation controls attention, mood, and space in art.

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.

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.

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.

A shade is a color mixed with black. Navy is a shade of blue, maroon is a shade of red. From Caravaggio's shadows to Rothko's dark fields, learn how shades work.

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.

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.

Sizing is the sealant applied to canvas or paper before gesso or ground to prevent oil penetration. Learn the history of rabbit skin glue sizing and why PVA size replaced it.

Solvents thin paint, dissolve resins, and clean brushes. From turpentine to mineral spirits to citrus solvents, learn the history and science of painting solvents.

Space in art refers to the distances and areas around, between, and within components of a work. From Renaissance perspective to negative space, learn how space 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.

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.

The support is the physical surface a painting is made on, from wood panels to canvas to copper. Learn its history, types, and why it matters for conservation.

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.

Tertiary colors are produced by mixing a primary with an adjacent secondary. From red-orange to blue-green, learn the six tertiary hues and how artists use them.

Texture in art is the perceived surface quality of a work. From Van Gogh's impasto to Michelangelo's polished marble, learn how texture works.

Three-point perspective adds a third vanishing point above or below the horizon for dramatic bird's-eye or worm's-eye views. Learn how it works and who used it.

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

A tint is a color mixed with white. Pink is a tint of red, sky blue is a tint of blue. From Renaissance flesh tones to Monet's high-key canvases, learn how tints work.

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.

Tone in art is a color mixed with gray, reducing its saturation. From Whistler's nocturnes to Morandi's bottles, learn how toned colors shape mood.

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.

Turpentine is the traditional solvent distilled from pine resin, used to thin oil paint and clean brushes. From Old Masters to modern safer alternatives, learn its history.

Two-point perspective uses two vanishing points to depict objects viewed at an angle. Learn how it works, who used it, and how to construct it with examples.

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

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.

Value in art is the lightness or darkness of a color or tone. From Caravaggio's chiaroscuro to Whistler's nocturnes, learn how value works.

The vanishing point is where parallel lines appear to converge in a perspective drawing. Learn its history from Brunelleschi to Taylor and how artists use it.

The vehicle is the liquid that carries pigment in paint, combining binder and solvent. From linseed oil to gum arabic to acrylic polymer, learn how vehicles define paint types.

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.

Visionary art depicts spiritual, mystical, and inner experiences rather than the physical world. From William Blake to Alex Grey, learn its history, artists, and techniques.

Visual literacy is the ability to interpret, evaluate, and create meaning from visual information. From art history to AI images, learn why it matters in 2026.

Warm colors are reds, oranges, and yellows. From Turner's sunsets to Matisse's red interiors, learn how warm colors advance, energize, and command attention in art.

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.

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.