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Saadia ben Joseph al-Fayumi

(Encyclopedia)Saadia ben Joseph al-Fayumi säˈdēä, äl-fīyo͞oˈmē [key], 882–942, Jewish scholar, b. Egypt. He was known as Saadia Gaon. He was the head of the great Jewish Academy at Sura, Babylonia, which...

bird of paradise

(Encyclopedia)bird of paradise, common name for any of 43 species of medium- to crow-sized passerine birds of New Guinea and the adjacent islands, known for the bright plumage, elongated tail feathers called wires,...

Banerjee, Abhijit Vanayak

(Encyclopedia)Banerjee, Abhijit Vanayak, 1961–, Indian-American economist, b. Mumbai, Ph.D. Harvard, 1988. He taught economics at Princeton (1988–92) and Harvard (1992–93) before moving to the Massachusetts I...

Vatel, François

(Encyclopedia)Vatel, François fräNswäˈ vätĕlˈ [key], fl. 17th cent., French chef, famous in the time of Louis XIV. Mme Marie de Sévigné, in her letters, speaks of him as the chef of the prince of Condé an...

hedging

(Encyclopedia)hedging, in commerce, method by which traders use two counterbalancing investment strategies so as to minimize any losses caused by price fluctuations. It is generally used by traders on the commoditi...

uniformitarianism

(Encyclopedia)uniformitarianism, in geology, doctrine holding that changes in the earth's surface that occurred in past geologic time are referable to the same causes as changes now being produced upon the earth's ...

infancy

(Encyclopedia)infancy, stage of human development lasting from birth to approximately two years of age. The hallmarks of infancy are physical growth, motor development, vocal development, and cognitive and social d...

Brown, John, American abolitionist

(Encyclopedia)Brown, John, 1800–1859, American abolitionist, b. Torrington, Conn. He spent his boyhood in Ohio. Before he became prominent in the 1850s, his life ha...

Induráin, Miguel

(Encyclopedia)Induráin, Miguel (Miguel Angel Induráin Larraya) mēgĕlˈ ängˈkhāl ĭndo͞oräˈēn läˈräyä [key], 1964–, Spanish bicycle racer. In a career lasting from 1985 to 1997, he dominated Europea...

velocity

(Encyclopedia)velocity, change in displacement with respect to time. Displacement is the vector counterpart of distance, having both magnitude and direction. Velocity is therefore also a vector quantity. The magnit...