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hydrogen cyanide

(Encyclopedia)hydrogen cyanide, HCN, colorless, volatile, and extremely poisonous chemical compound whose vapors have a bitter almond odor. It melts at −14℃ and boils at 26℃. It is miscible in all proportions...

Du Pont, Eleuthère Irénée

(Encyclopedia)Du Pont, Eleuthère Irénée do͞o pŏnt, Fr. ālötĕrˈ ērānāˈ dü pôN [key], 1772–1834, American gunpowder manufacturer, b. Paris, France; son of Pierre Samuel du Pont de Nemours. At the age...

Edmonton

(Encyclopedia)Edmonton ĕdˈməntən [key], city, provincial capital, central Alta., Canada, on the North S...

Guanajuato, state, Mexico

(Encyclopedia)Guanajuato gwänähwäˈtō [key], state, 11,805 sq mi (30,575 sq km), W central Mexico, on the ...

juniper

(Encyclopedia)juniper, any tree or shrub of the genus Juniperus, aromatic evergreens of the family Cupressaceae (cypress family), widely distributed over the north temperate zone. Many are valuable as a source of l...

Kalahari

(Encyclopedia)Kalahari khĕmzˈbôk [key] (est. 1931) and Botswana's Gemsbok National Park (est. 1938). ...

Sully, Maximilien de Béthune, duc de

(Encyclopedia)Sully, Maximilien de Béthune, duc de sülēˈ [key], 1560–1641, French statesman. Born and reared a Protestant, he fought in the Wars of Religion under the Huguenot leader Henry of Navarre (later ...

spraying

(Encyclopedia)spraying, horticultural practice of applying fungicides, insecticides, and herbicides, usually in solution, to plants. It may be accomplished by various means, e.g., the watering can, sprinkler attach...

Peoria

(Encyclopedia)Peoria pēôrˈēə [key]. 1 City (1990 pop. 50,618), Maricopa co., central Ariz., a suburb of Phoenix; settled 1897, inc. 1954. With the completion of the Arizona Canal in 1885, the area was settled ...

William I, king of the Netherlands

(Encyclopedia)William I, 1772–1843, first king of the Netherlands and grand duke of Luxembourg (1815–40), son of Prince William V of Orange, last stadtholder of the Netherlands. He commanded (1793–95) the Dut...