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Marcion

(Encyclopedia)Marcion märˈshən, märˈsēən [key], c.85–c.160, early Christian bishop, founder of the Marcionites, one of the first great Christian heresies to rival Catholic Christianity. He was born in Sino...

Rousseau, Henri

(Encyclopedia)Rousseau, Henri äNrēˈ ro͞osōˈ [key], 1844–1910, French primitive painter, b. Laval. He was entirely self-taught, and his work remained consistently naive and imaginative. Rousseau was called L...

Rasputin, Grigori Yefimovich

(Encyclopedia)Rasputin, Grigori Yefimovich răspyo͞oˈtĭn, Rus. grĭgôˈrē yĭfēˈməvĭch rəspo͞oˈtyĭn [key], 1869–1916, Russian holy man and courtier, a notorious figure at the court of Czar Nicholas I...

reservoir

(Encyclopedia)reservoir rĕzˈəvôr, –vwär [key], storage tank or wholly or partly artificial lake for storing water. Building an embankment or dam to preserve a supply of water for irrigation is an ancient pra...

Dalí, Salvador

(Encyclopedia)Dalí, Salvador sälväthōrˈ dälēˈ, däˈlē [key], 1904–89, Spanish painter. At first influenced by futurism, in 1924 Dalí came under the influence of the Italian painter de Chirico and by 19...

aberration

(Encyclopedia)CE5 A. Spherical aberration: Light rays near the edge of the lens are bent more and brought to focus nearer to the lens. B. Chromatic aberration: Shorter wavelengths (higher frequencies) are bent m...

ultrasonics

(Encyclopedia)ultrasonics, study and application of the energy of sound waves vibrating at frequencies greater than 20,000 cycles per second, i.e., beyond the range of human hearing. The application of sound energy...

quarantine

(Encyclopedia)quarantine kwŏrˈəntēn [key], isolation of persons, animals, places, and effects that carry or are suspected of harboring communicable disease. The term originally referred to the 40 days of offsho...

Abravanel, Judah

(Encyclopedia)Abravanel or Abarbanel, Judah, c.1460–c.1523, Jewish philosopher, physician, and poet, son of Isaac Abravanel, b. Lisbon; he is also known as Leone Ebreo. He fled (1483) from Portugal to Spain with ...

hysteria

(Encyclopedia)hysteria hĭstĕrˈēə [key], in psychology, a disorder commonly known today as conversion disorder, in which a psychological conflict is converted into a bodily disturbance. It is distinguished from...