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cobalt, chemical element

(Encyclopedia)cobalt, metallic chemical element; symbol Co; at. no. 27; at. wt. 58.9332; m.p. 1,495℃; b.p. about 2,870℃; sp. gr. 8.9 at 20℃; valence +2 or +3. Cobalt is a silver-white, lustrous, hard, brittle...

lead, chemical element

(Encyclopedia)lead, metallic chemical element; symbol Pb [Lat. plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals used by h...

Meaux

(Encyclopedia)Meaux mō [key], city (1990 pop. 49,409), Seine-et-Marne dept., N France, in Brie, on the Marne River. It is an industrial center where metals, flour, chemicals, and foodstuffs are produced. An episco...

rosin

(Encyclopedia)rosin or colophony, hard, brittle, translucent resin, obtained as a solid residue from crude turpentine. Usually pale yellow or amber, its color may vary from brownish-black to transparent depending o...

throne

(Encyclopedia)throne, chair of state or the seat of a high dignitary. The throne was at first a stool or bench and later became an ornate armchair, usually raised on a dais and surmounted by a canopy. Often lavishl...

Aarhus

(Encyclopedia)Aarhus ôrˈho͞os [key], city (2021 est. pop. 282,910), capital of Aarhus co., central Denmark, on Aarhus Bay, an arm of the Kattegat. The second largest city in Denmark,...

Ferrara

(Encyclopedia)Ferrara fār-räˈrä [key], city, capital of Ferrara prov., in Emilia-Romagna, N Italy. It is a ...

Pozzuoli

(Encyclopedia)Pozzuoli pōt-tswôˈlē [key], Latin Puteoli, city (1991 pop. 75,142), Campania, S Italy, on the Gulf of Pozzuoli, an arm of the Bay of Naples. It is a port and an industrial and tourist center. Manu...

intoxication

(Encyclopedia)intoxication, condition of body tissue affected by a poisonous substance. Poisonous materials, or toxins, are to be found in heavy metals such as lead and mercury, in drugs, in chemicals such as alcoh...

João Pessoa

(Encyclopedia)João Pessoa zhwouN pəsôˈə [key], city (1991 pop. 497,600), capital of Paraíba state, NE Brazil, at the confluence of the Sanhauá and Paraíba do Norte rivers. Cotton, sugar, and minerals are ex...