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parabola noun

  /-bolɑ/ , /parɑ.bɔlɑ/ , /pəˈɹæbələ/
  • (geometry) The conic section formed by the intersection of a cone with a plane parallel to a tangent plane to the cone; the locus of points equidistant from a fixed point (the focus) and line (the directrix).
 parabole
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