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French art

(Encyclopedia)French art, the artistic production of the region that constitutes the historic nation of France. See also French architecture. The innovations of postimpressionism, combined with the influence of C...

Echinodermata

(Encyclopedia)CE5 Internal anatomy of a sea star, representative of the phylum Echinodermata Echinodermata əkīˌnōdûrˈmətə [key] [Gr.,=spiny skin], phylum of exclusively marine bottom-dwelling invertebra...

ion, in chemistry

(Encyclopedia)ion, atom or group of atoms having a net electric charge. Ionization has many applications. Vapor lamps and fluorescent lamps take advantage of the light given off when positive ions recombine with ...

Catherine II

(Encyclopedia)Catherine II or Catherine the Great, 1729–96, czarina of Russia (1762–96). Catherine increased the power and prestige of Russia by skillful diplomacy and by extending Russia's western boundary i...

Friends, Religious Society of

(Encyclopedia)Friends, Religious Society of, religious body originating in England in the middle of the 17th cent. under George Fox. The members are commonly called Quakers, originally a term of derision. The org...

tuberculosis

(Encyclopedia)tuberculosis (TB), contagious, wasting disease caused by any of several mycobacteria. The most common form of the disease is tuberculosis of the lungs (pulmonary consumption, or phthisis), but the int...

Shanghai

(Encyclopedia)Shanghai shăngˈhīˈ, shängˈhīˈ [key], city and municipality (2010 pop. 23,019,148), in, but independent of, Jiangsu prov., E China, on the Huangpu (Whangpoo) River where it flows into the Chang...

petroleum

(Encyclopedia)petroleum, oily, flammable liquid that occurs naturally in deposits, usually beneath the surface of the earth; it is also called crude oil. It consists principally of a mixture of hydrocarbons, with t...

Byzantine Empire

(Encyclopedia)CE5 CE5 Byzantine Empire (c.1000) Byzantine Empire, successor state to the Roman Empire (see under Rome), also called Eastern Empire and East Roman Empire. It was named after Byzantium, which Emp...

Cromwell, Oliver

(Encyclopedia)Cromwell, Oliver krŏmˈwĕl, krŭmˈ–, –wəl [key], 1599–1658, lord protector of England. Opinions of Cromwell have always varied widely. His military skill and force of character are univers...