
Art Glossary
A comprehensive glossary of art terms, techniques, movements, and materials. From chiaroscuro to creative coding, find clear definitions for every art concept.
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Canvas Panel: Canvas Mounted on Rigid Board for Portable Painting
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: The Woven Fabric That Became the World's Painting Surface
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.
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Gesso: The Primer That Prepares Every Painting Surface
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.
Glazing: Transparent Oil Layers for Luminosity and Depth
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.
Ground: The Preparatory Layer Between Support and Paint
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.
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Impasto Medium: Additives That Thicken Paint for Texture
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: Thick Paint, Visible Brushwork, and Physical Texture
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: The Toned Ground Applied Before 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.
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Lead White: The Toxic Pigment That Dominated Painting for 2,000 Years
Lead white was the most important white pigment in European painting for two millennia. Learn its history, why it was so valued, and how its toxicity led to its replacement.
Linseed Oil: The Binder That Made Oil Painting Possible
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.
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Mahl Stick: The Painter's Support Stick for a Steady Hand
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.
Medium (Painting): The Substance That Changes How Paint Behaves
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.
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Paint Tube: The Tin Container That Changed Painting Forever
The collapsible paint tube, patented in 1841, made plein air painting practical. From Rand to Renoir to Monet, learn how a tin tube reshaped art history.
Palette Knife: The Flat Blade That Went From Mixing Tool to Painting Tool
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.
Palette: The Painter's Mixing Surface, From Medieval Boards to Modern Studio Tools
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.
Panel (Painting): The Rigid Surface That Predates Canvas by a Thousand Years
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.
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Sfumato: Gradual Blending With No Visible Lines
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.
Sizing: The Sealant Layer That Protects Canvas and Paper From Oil
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.
Solvent: The Liquid That Thins and Cleans Paint
Solvents thin paint, dissolve resins, and clean brushes. From turpentine to mineral spirits to citrus solvents, learn the history and science of painting solvents.
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Wet-on-Dry: Layering Over Dried Paint for Control and Precision
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: Painting Into Wet Paint Before It Dries
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.
Why an Art Glossary?
Art has always had a language problem. Walk into any gallery and you will hear terms like chiaroscuro, impasto, sfumato, and pentimento thrown around as if everyone knows what they mean. Most people do not. They nod along, afraid to ask, and miss half of what the painting is actually doing.
This glossary exists to fix that. Every entry is written in plain English with real examples: specific paintings, specific artists, specific dates. When we explain plein air, we point you to Monet working beside the Seine in 1873, not a generic definition copied from a dictionary. When we cover creative coding, we start with Casey Reas and Ben Fry at MIT in 2001, not a vague paragraph about "art and technology."
The terms here span centuries and disciplines. You will find Renaissance techniques sitting next to digital art movements, printmaking terminology next to motion graphics concepts. That mix is intentional. Art does not stay in neat historical boxes, and neither does the vocabulary we use to talk about it. A painter working today might need to understand glazing just as much as a 3D animator needs to know what kinetic typography means.
Each definition is a starting point, not a finish line. We write them to be specific enough that you can recognize the technique the next time you see it, but short enough that you can read one in under five minutes. If a term leads you to a painting you had not considered before, or sends you down a rabbit hole about a movement you had never heard of, the glossary is doing its job.
New terms are added regularly. If there is a concept you keep running into but cannot find here, that is a gap we want to fill. The best art terminology does not stay still. It grows as artists invent new ways of working, and the language has to keep up.