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linseed oil

(Encyclopedia)linseed oil, amber-colored, fatty oil extracted from the cotyledons and inner coats of the linseed. The raw oil extracted from the seeds by hydraulic pressure is pale in color and practically without ...

lake, in dyeing

(Encyclopedia)lake, in dyeing, an insoluble pigment formed by the reaction between an organic dye and a mordant. The color of a lake depends upon the mordant as well as the dye used. Generally, lakes are not as col...

Carr, Emily

(Encyclopedia)Carr, Emily, 1871–1945, Canadian painter. She studied (1889–c.1895) at the San Francisco School of Art and later in London and in Paris. In Victoria, British Columbia, she taught painting and visi...

Cavedone, Giacomo

(Encyclopedia)Cavedone, Giacomo jäˈkōmō kävādôˈnā [key], 1577–1660, Italian painter, of the Bolognese school. He assisted Guido Reni in Rome, but his reputation as a master of color and composition was w...

broom rape

(Encyclopedia)broom rape, common name for plants of the Orobanchaceae, the broom rape family. They are parasitic on the roots of other plants; they have small leaves and little or no green color. In some species th...

Pickett, Joseph

(Encyclopedia)Pickett, Joseph, 1848–1918, American primitive painter, b. New Hope, Pa., where he lived all his life. He worked as a carpenter, canal-boat builder, and grocer. At about age 65, Pickett turned to pa...

spinel

(Encyclopedia)spinel, magnesium aluminum oxide, MgAl2O4, a mineral crystallizing in the isometric system, usually as octahedrons. It occurs as an accessory mineral in basic igneous rocks, in aluminum-rich metamorph...

Staël, Nicholas de

(Encyclopedia)Staël, Nicholas de nēkôläˈ də stäl [key], 1914–55, French painter, b. St. Petersburg, Russia. Reared in Brussels, he traveled extensively before settling in France in 1940. De Staël evolved ...

grouper

(Encyclopedia)grouper, common name for a large carnivorous member of the family Serranidae (sea bass family), abundant in tropical and subtropical seas and highly valued as food fish. There are several genera, nota...

sucrose

(Encyclopedia)sucrose so͞oˈkrōs [key], commonest of the sugars, a white, crystalline solid disaccharide (see carbohydrate) with a sweet taste, melting and decomposing at 186℃ to form caramel. It is known commo...