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bay rum
bay rum aromatic liquid used chiefly as a cosmetic and a perfume. It originated in the West Indies, where it was prepared by distillation from rum and bay leaves. It is now commonly a mixture of oil of bay (from a bayberry), alcohol, water, oil of pimento, and oil of orange peel.
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ultramarine
ultramarine blue pigment used chiefly as a coloring material and as a bluing agent. A double silicate of sodium and aluminum with some sulfur, it is prepared commercially from kaolin, sulfur, soda ash, and other inexpensive ingredients. It was formerly produced by grinding the rare mineral lapis ...
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magnesia
magnesia common name for the chemical compound magnesium oxide, MgO. It occurs as colorless, cubic crystals. It is refractory, melting at about 2,800°C. It is very slightly soluble in pure water but is soluble in acids and solutions of ammonium salts. The magnesia of commerce is a fine white po...
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Epsom salts
Epsom salts common name for magnesium sulfate heptahydrate, MgSO 4 ·7H 2 O, a water-soluble bitter-tasting compound that occurs as white or colorless needle-shaped crystals. It was first prepared from the waters of mineral springs at Epsom, England; it also occurs as the mineral epsomite. Ep...
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sweetbread
sweetbread The thymus gland (known as throat sweetbread) and the pancreas (stomach sweetbread), especially of the calf and lamb (although beef sweetbreads are sometimes eaten), are considered delicacies and are rich in mineral elements and vitamins. The pancreas is generally preferred to the thymus...
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plaster of Paris
plaster of Paris (POP) n. a preparation of gypsum (calcium sulphate) that sets hard when water is added. It is used in dentistry and orthopaedics for preparing plaster casts....
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fluorite
fluorite or fluorspar , mineral appearing in various colors, e.g., green, yellow-brown, rose, and red. Chemically, it is calcium fluoride, CaF 2 . Its crystals, commonly cubic, are transparent or translucent and under certain conditions exhibit fluorescence. The mineral also occurs in granular a...
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buckminsterfullerene
buckminsterfullerene or buckyball, C 60 , hollow cage carbon molecule named for R. Buckminster Fuller because of the resemblance of its molecular structure to his geodesic domes. Although buckminsterfullerene (C 60 ) was originally detected in soot in 1985, isolation was first reported in 1...
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Patience Lovell Wright
Patience Lovell Wright 1725-86, American sculptor, b. Bordentown, N.J., mother of Joseph Wright. Her portraits, modeled in wax, were the earliest recorded attempts at sculptural expression in the American colonies. They were highly praised there and in England, where she lived after 1772 and where ...
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Richard Mather
Richard Mather 1596-1669, British Puritan clergyman in North America, b. Lancashire, England. He studied at Oxford, began preaching, and was ordained in 1620. His Puritan beliefs led him into difficulties, and he fled to Massachusetts (1635), where he was pastor of Dorchester until his death. He he...
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