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fifth column
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spinal column
spinal column bony column forming the main structural support of the skeleton of humans and other vertebrates, also known as the vertebral column or backbone. It consists of segments known as vertebrae linked by intervertebral disks and held together by ligaments. In human beings, the spinal... Read more |
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Guidance
311. Guidance (See also Counsel.) Analects, The emphasize human relationships, the golden rule, and usefulness to the state and society. [Chin. Lit.: The Analects of Confucius in Benét, 33] Anthony, Mr. gave guidance to supplicants on radio show. [Am. Radio: “Ask Mr.... Read more |
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vertebral column
vertebral column (backbone; spinal column; spine) A flexible bony column in vertebrates that extends down the long axis of the body and provides the main skeletal support. It also encloses and protects the spinal cord and provides attachment for the muscles of the back. The vertebral column consists... Read more |
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Charles Adolphe Wurtz
Charles Adolphe Wurtz , 1817-84, French chemist. He was professor at the Sorbonne (1852-75), at the Faculty of Medicine, Paris (1853-75), and at the Faculty of Sciences, Paris (from 1875). Noted for his research in organic chemistry, he discovered methyl and ethyl amines (1849), glycol (1856), and... Read more |
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Spina Bifida
Spina bifida Definition Spina bifida belongs to a group of disorders known as neural tube defects (NTDs). These all involve problems in the development and closure of the neural tube, a structure in the human fetus that begins forming very early in a pregnancy. The neural tube eventually becomes... Read more |
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skull
skull the skeletal structure of the head, composed of the facial and cranial bones. The skull houses and protects the brain and most of the chief sense organs; i.e., the eyes, ears, nose, and tongue. Among humans, some 14 bones shape the face, most occurring in symmetrical pairs. They are the... Read more |
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entasis
entasis [Gr.,=stretching], the slight convex curvature of a classical column that diminishes in diameter as it rises. This device, as used by Greek builders, was of extreme subtlety, the freehand curvature being merely sufficient to guard the contours of the column from any appearance of inward... Read more |
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column
column vertical architectural support, circular or polygonal in plan. A column is generally at least four or five times as high as its diameter or width; stubbier freestanding masses of masonry are usually called piers or pillars, particularly those with a rectangular plan. In fully developed... Read more |
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event stratigraphy
event stratigraphy Event stratigraphy is a comparative latecomer to the Earth sciences, but is proving to be a useful and interesting concept. Extraordinary or singular widespread geological events of very short duration may leave an impression in the stratigraphical record. Fixing the order and... Read more |
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