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Hamden

(Encyclopedia)Hamden, town (2020 pop. 61,169), New Haven co., S Conn.; inc. 1786. The town, settled c.1638, was named for John Hampden, the ...

Novara

(Encyclopedia)Novara nōväˈrä [key], city (1991 pop. 101,112), capital of Novara prov., Piedmont, N Italy. It is an agricultural and industrial center and a rail junction. Manufactures include textiles, chemical...

Massa, city, Italy

(Encyclopedia)Massa mäsˈä [key], city (1991 pop. 66,737), capital of Massa-Carrara prov., Tuscany, N central Italy, near the Ligurian Sea. Marble is quarried, and chemicals, metals, and machinery are produced th...

Vannes

(Encyclopedia)Vannes vän [key], town (1990 pop. 48,454), capital of Morbihan dept., NW France, in Brittany, on the Gulf of Morbihan. It is an important agricultural and tourist center that produces processed food,...

trinitrotoluene

(Encyclopedia)trinitrotoluene or TNT trīˌnīˌtrōtŏlˈyo͞oēn [key], CH3C6H2(NO2)3, crystalline, aromatic compound that melts at 81℃. It is prepared by the nitration of toluene. Trinitrotoluene is a high exp...

solder

(Encyclopedia)solder sŏdˈər [key], metal alloy used in the molten state as a metallic binder. The type of solder to be used is determined by the metals to be united. Soft solders are commonly composed of lead an...

Oshawa

(Encyclopedia)Oshawa ŏshˈəwə [key], city (1991 pop. 129,344), SE Ont., Canada, a port on Lake Ontario; since 1974 it has been part of the regional municipality of Durham (1991 pop. 409,070). Oshawa is the home ...

hydrogen chloride

(Encyclopedia)hydrogen chloride, chemical compound, HCl, a colorless, poisonous gas with an unpleasant, acrid odor. It is very soluble in water and readily soluble in alcohol and ether. It fumes in moist air. It is...

germanium

(Encyclopedia)germanium jərmāˈnēəm [key] [from Germany], semimetallic chemical element; symbol Ge; at. no. 32; at. wt. 72.63; m.p. 937.4℃; b.p. 2,830℃; sp. gr. 5.323 at 25℃; valence +2 or +4. Pure german...

alizarin

(Encyclopedia)alizarin əlĭzˈərĭn [key], or 1,2-dihydroxyanthraquinone, mordant vegetable dye obtained originally from the root of the madder plant (Rubia tinctorum), in which it occurs as a glucoside. The term...