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Parabola :: Parabola (n.) One of a group of curves defined by the equation y = axn where n is a positive whole number or a positive fraction. For the cubical parabola n = 3; for the semicubical parabola n = /. See under Cubical, and Semicubical. The parabolas have infinite branches, but no rectilineal asymptotes..

Parabolical :: Parabolical (a.) Generated by the revolution of a parabola, or by a line that moves on a parabola as a directing curve; as, a parabolic conoid..

Paraboliform :: Paraboliform (a.) Resembling a parabola in form.

Parabolically :: Parabolically (adv.) In the form of a parabola.

Parameter :: Parameter (n.) Specifically (Conic Sections), in the ellipse and hyperbola, a third proportional to any diameter and its conjugate, or in the parabola, to any abscissa and the corresponding ordinate..

Semiparabola :: Semiparabola (n.) One branch of a parabola, being terminated at the principal vertex of the curve..

Parabola :: Parabola (n.) 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..

Parabolical :: Parabolical (a.) Having the form or nature of a parabola; pertaining to, or resembling, a parabola; as, a parabolic curve..

Paraboloid :: Paraboloid (n.) The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.

Parabolas :: Parabolas (pl. ) of Parabol.

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