Columbia Encyclopedia

Search results

430 results found

desert

(Encyclopedia)desert, arid region, usually partly covered by sand, having scanty vegetation or sometimes almost none, and capable of supporting only a limited and specially adapted animal population. The so-called ...

helium

(Encyclopedia)helium hēˈlēəm [key], gaseous chemical element; symbol He; at. no. 2; at. wt. 4.0026; m.p. below −272℃ at 26 atmospheres pressure; b.p. −268.934℃ at 1 atmosphere pressure; density 0.1785 g...

Buchanan, James

(Encyclopedia)Buchanan, James, 1791–1868, 15th President of the United States (1857–61), b. near Mercersburg, Pa., grad. Dickinson College, 1809. Buchanan was nominated as a Democratic candidate for the pres...

Portsmouth, cities, United States

(Encyclopedia)Portsmouth. 1 City (1990 pop. 25,925), Rockingham co., SE N.H., a port of entry with a good harbor and a state-owned port terminal at the mouth of the Piscataqua River opposite Kittery, Maine; inc. 16...

seismology

(Encyclopedia)seismology sīzmŏlˈəjē, sīs– [key], scientific study of earthquakes and related phenomena, including the propagation of waves and shocks on or within the earth by natural or artificially genera...

Webster, Daniel

(Encyclopedia)Webster, Daniel, 1782–1852, American statesman, lawyer, and orator, b. Salisbury (now in Franklin), N.H. As a U.S. Senator from Massachusetts (1827–41), he became a leading political figure of t...

Wyoming, state, United States

(Encyclopedia) CE5 Wyoming wīōˈmĭng [key], least populous state in the United States, one of the Rocky Mt. states of the West. It is bordered by South Dakota and Nebraska (E), Colorado and Utah (S), Idaho (W)...

sulfur

(Encyclopedia) CE5 Sulfur crystals sulfur or sulphur sŭlˈfər [key], nonmetallic chemical element; symbol S; at. no. 16; interval in which at. wt. ranges 32.059–32.076; m.p. 112.8℃ (rhombic), 119.0℃ (mon...

ant

(Encyclopedia)ant, any of the 2,500 insect species constituting the family Formicidae of the order Hymenoptera, to which the bee and the wasp also belong. Like most members of the order, ants have a “wasp waist,...

fur trade

(Encyclopedia)fur trade, in American history. Trade in animal skins and pelts had gone on since antiquity, but reached its height in the wilderness of North America from the 17th to the early 19th cent. The demand ...
 

Browse by Subject