Technique: An artist's technique is the manner and skill where they employ their tools and materials to achieve and expressive effect.

-Art Fundamentals

Tenebrism: A technique of painting that exaggerates or emphasizes the affects of light and shadow. Large amounts of dark value are placed right next to smaller areas of concentrated light, which change suddenly, in order to concentrate attention on a specific area.

-Art Fundamentals

Tertiary Color: A tertiary color is the result of all three primary colors in varying amounts or two secondary colors. Tertiary colors are neutralized in intensity and hue.

-Art Fundamentals

Texture: The surface character of a material that can be experience by touch or the illusion of touch.

-Art Fundamentals

Tint: A tint occurs when you add white to any color. Pink is a tint of red. Lavender is a tint of violet.

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Tone: Tone is a reference to the unaltered color that is purchased in the tube or jar of paint.

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Toulouse-Lautrec, Henri de: Henri de Toulouse-Lautrec (1864-1901) was a French painter, printmaker, draftsman, and illustrator who was part of the Post-Impressionist Art Movement. Toulouse-Lautrec suffered poor health all his life. He was short statured because he broke his thigh bones at 13 and 14, and they never healed properly. He was a very active artist, producing some 737 canvases, 275 watercolors, 363 prints and posters, 5,084 drawings, some ceramic and stained glass work. His imagery was from the parties, bars and brothels that he lived around.

-Wikipedia

Transparency: A transparency is a visual quality where a distant image or element can be seen through a nearer one.

-Art Fundamentals

Triptych: Triptychs are a three-paneled painting, most often seen as altar pieces, although many modern painters will paint a single scene across three canvases.

-Art Fundamentals

Trompe l'oel: Trompe l'oel literally means 'deceives the eye', and is used to describe the technique of copying nature so exactly that the subject can be mistaken for reality.

-Art Fundamentals