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Roland

(Encyclopedia) RolandRolandrōˈlənd [key], the great French hero of the medieval Charlemagne cycle of chansons de geste, immortalized in the Chanson de Roland (11th or 12th cent.). Existence of an…

Root, Elihu

(Encyclopedia) Root, Elihu, 1845–1937, American cabinet member and diplomat, b. Clinton, N.Y. Admitted to the bar in 1867, he practiced law in New York City, became prominent in Republican politics,…

dune

(Encyclopedia) dune, mound or ridge of wind-blown sand formed in arid regions and along coasts. Dunes are common in most of the great deserts of the world. Often a dune begins to form because…

biotechnology

(Encyclopedia) biotechnology, the use of biological processes, as through the exploitation and manipulation of living organisms or biological systems, in the development or manufacture of a product…

sunburn

(Encyclopedia) sunburn, inflammation of the skin caused by actinic rays from the sun or artificial sources. Moderate exposure to ultraviolet radiation is followed by a red blush, but severe exposure…

Northern War

(Encyclopedia) Northern War, 1700–1721, general European conflict, fought in N and E Europe at the same time that the War of the Spanish Succession was fought in the west and the south. It arose…

Periodic Table of the Elements (table)

(Encyclopedia) Periodic Table of the Elements (showing atomic number and atomic symbol; click on atomic symbol for more detailed information) Groups 1 2 3 4 5 6 7 8 9 10 11 12…

rattlesnake

(Encyclopedia) rattlesnake, poisonous New World snake of the pit viper family, distinguished by a rattle at the end of the tail. The head is triangular, being widened at the base. The rattle is a…

Lewis, John Llewellyn

(Encyclopedia) Lewis, John Llewellyn, 1880–1969, American labor leader, b. Lucas co., Iowa; son of a Welsh immigrant coal miner. He became a miner and after 1906 rose through the union ranks to…

Moravian Church

(Encyclopedia) Moravian Church,&sp;Renewed Church of the Brethren, or Unitas FratrumUnitas Fratrumy&oomacr;nēˈtäs fräˈtr&oobreve;m [key], an evangelical Christian communion whose…