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classification
(Encyclopedia) CE5 classification, in biology, the systematic categorization of organisms into a coherent scheme. The original purpose of biological classification, or systematics, was to organize…round
(Encyclopedia) round, in music, a perpetual canon on a tune that returns to its beginning in which all the voices enter at the unison or the octave. An example is Sumer Is Icumen In. Rounds were…polar front
(Encyclopedia) polar front, zone of transition between polar and tropical air masses. Its average position during the winter is at about 30° lat. and during the summer at about 60° lat. In the N…scalping
(Encyclopedia) scalping, taking the scalp of an enemy. The custom, comparable to head-hunting, was formerly practiced in Europe and Asia (Herodotus describes its practice by the Scythians, for…Scrope, Richard Le
(Encyclopedia) Scrope, Richard LeScrope, Richard Lelə skr&oomacr;p [key], 1350?–1405, English archbishop. He probably studied law at both Oxford and Cambridge. Having taken priest's orders in…distributive law
(Encyclopedia) distributive law. In mathematics, given any two operations, symbolized by * and ∘, the first operation, *, is distributive over the second, ∘, if a*(b∘c)=(a*b)∘(a*c) for all possible…Julius I, Saint
(Encyclopedia) Julius I, Saint, pope (337–52), a Roman; successor of St. Marcus. In the controversy over Arianism, when both sides appealed to him for support, he convened a synod at Rome (340), at…homogenization
(Encyclopedia) homogenizationhomogenizationhəmŏjˌənəzāˈshən [key], process in which a mixture is made uniform throughout. Generally this procedure involves reducing the size of the particles of one…interval
(Encyclopedia) interval, in music, the difference in pitch between two tones. Intervals may be measured acoustically in terms of their vibration numbers. They are more generally named according to…nastic movement
(Encyclopedia) nastic movement, in botany, the movement of plant parts in response either to certain external stimuli or to internal growth stimuli. Nastic movements, which are generally slow, can be…