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Definition of: parabola
(pə·rab′ə·lə) noun Math.
The locus of a point moving in a plane so that its distances from a fixed point (focus) and a fixed straight line (directrix) are equal; the curve formed by the edges of a plane when cutting through a right circular cone at an angle parallel to one of its sides. [<Med. L <Gk. parabolē. Doublet of PALAVER, PARABLE, PAROLE.]
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