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doc Definition of parabola
    English to English
    noun
  • a plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve
  • source: WordNet 3.0
  • A kind of curve; one of the conic sections formed by the intersection of the surface of a cone with a plane parallel to one of its sides. It is a curve, any point of which is equally distant from a fixed point, called the focus, and a fixed straight line, called the directrix. See Focus.
  • source: Webster 1913
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