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heartwood

(Encyclopedia)heartwood, the central, woody core of a tree, no longer serving for the conduction of water and dissolved minerals; heartwood is usually denser and darker in color than the outer sapwood. Before the s...

Kaigetsudo

(Encyclopedia)Kaigetsudo kīgĕtˈso͞odō [key], school of Japanese artists painting in the ukiyo-e style (see Japanese art). Kaigetsudo was founded by Kaigetsudo Ando in the early 18th cent. Characterized by broa...

molybdenite

(Encyclopedia)molybdenite məlĭbˈdənīt, mō– [key], a mineral, molybdenum disulfide, MoS2, blue-gray in color, with a metallic luster and greasy feel. It occurs in crystals of the hexagonal system but more co...

lapis lazuli

(Encyclopedia)lapis lazuli lăpˈĭs lăzˈo͝olē [key], gem, deep blue, violet, or greenish blue in color and usually flecked with yellow iron pyrites. It is composed of lazurite, a complex sodium aluminum silica...

Bouts, Dierick

(Encyclopedia)Bouts, Dierick, Dirk, or Thierry dēˈrĭk, dĭrk, tyĕˈrē bouts [key], c.1420–1475, early Netherlandish painter, b. Haarlem, active in Louvain. Bouts was influenced by Roger van der Weyden, the v...

Brook, Alexander

(Encyclopedia)Brook, Alexander, 1898–1980, American painter, b. Brooklyn, N.Y. Brook's paintings, which are consistently realistic, include portraits, still-life subjects, landscapes, and figures. His color is su...

birthmark

(Encyclopedia)birthmark, pigmented maldevelopment of the skin that varies in size, either present at birth or developing later. Birthmarks may appear as moles (melanocytic nevi) that vary in color from light brown ...

Advent

(Encyclopedia)Advent [Lat.,=coming], season of the Christian ecclesiastical year preceding Christmas, lasting in the West from the Sunday nearest Nov. 30 (St. Andrew's Day) until Christmas Eve. In the Roman Catholi...

Bernardin de Saint-Pierre, Jacques Henri

(Encyclopedia)Bernardin de Saint-Pierre, Jacques Henri zhäk äNrēˈ bĕrnärdăNˈ də săN–pyĕrˈ [key], 1737–1814, French naturalist and author. He was a friend of Rousseau, by whom he was strongly influen...

Stella, Joseph

(Encyclopedia)Stella, Joseph, 1877–1946, American painter, b. Italy, emigrated to the United States in 1896. He studied at the Art Students League of New York City with William Chase and later in Italy and Paris....