单词 | parabola |
释义 | parabola/pəˈrab(ə)lə /noun (plural parabolas or parabolae /pəˈrab(ə)liː/) A symmetrical open plane curve formed by the intersection of a cone with a plane parallel to its side. The path of a projectile under the influence of gravity follows a curve of this shape.The solutions to the equations describing the motions produced by this law are called conic sections - ellipses, hyperbolae and parabolae - which you get by intersecting a plane and a cone....
OriginLate 16th century: modern Latin, from Greek parabolē 'placing side by side, application', from para- 'beside' + bolē 'a throw' (from the verb ballein). Rhymes |
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