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fulminate
fulminate , any salt of fulminic acid, HONC, a highly unstable compound known only in solution. The term is most commonly applied to the explosive mercury (II) fulminate, also called fulminate of mercury, Hg(ONC) 2 . The pure compound forms white cubic crystals. It is made by the action of nitric ac...
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amanita
amanita Large, widely distributed genus of fungi. Amanitas usually have distinct stalks and the prominent remains of a veil in a fleshy ring under the cap and at the bulbous base. They include some of the most poisonous fungi known, such as the death cap and destroying angel....
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chickadee
chickadee , small North American bird of the titmouse family. The black-capped chickadee ( Parus atricapillus ), lively and gregarious, is a permanent resident over most of its range in the East. Both sexes have black caps, gray backs and wings, and fluffy white to buff underparts. They often swin...
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Melville Bay
Melville Bay broad indentation of the western coast of Greenland, opening to the SW into Baffin Bay. The inland ice cap comes down to the coast, and glaciers discharge much ice into its waters.
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crumhorn
crumhorn J-shaped, double-reed musical instrument used throughout Europe from the 15th cent. through the 17th cent. It possesses a soft, reedy tone. The reed is enclosed by a wooden cap with a hole at the top through which the player blows. The cap serves as a wind chamber, which causes the reed to...
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set
set in mathematics, collection of entities, called elements of the set, that may be real objects or conceptual entities. Set theory not only is involved in many areas of mathematics but has important applications in other fields as well, e.g., computer technology and atomic and nuclear physics.
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set
set in mathematics, collection of entities, called elements of the set, that may be real objects or conceptual entities. Set theory not only is involved in many areas of mathematics but has important applications in other fields as well, e.g., computer technology and atomic and nuclear physics.
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Alexander John Forsyth
Alexander John Forsyth , 1769-1843, Scottish inventor. He invented in 1807 the first workable percussion cap for the ignition of gunpowder in firearms. Forsyth refused an offer from Napoleon of £20,000 for the secret and was later pensioned by the British government.
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hat
hat headdress developed from the simple close-fitting cap and hood of antiquity. The first hat, which was distinguished as such by having a brim, was the felt petasus of the Greeks, which tied under the chin and was worn by travelers. The decorative peaked cap was most popular in the Middle Ages....
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headdress
headdress head covering or decoration, protective or ceremonial, which has been an important part of costume since ancient times. Its style is governed in general by climate, available materials, religion or superstition, and the dictates of fashion. The most primitive form consisted of varied st...
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