semicubical parabola
Parabola Pa*rab"o*la, n.; pl. {Parabolas}. [NL., fr. Gr. ?; -- so called because its axis is parallel to the side of the cone. See {Parable}, and cf. {Parabole}.] (Geom.) (a) 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}. (b) One of a group of curves defined by the equation y = ax^{n} where n is a positive whole number or a positive fraction. For the {cubical parabola} n = 3; for the {semicubical parabola} n = 3/2. See under {Cubical}, and {Semicubical}. The parabolas have infinite branches, but no rectilineal asymptotes. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Semicubical parabola — Semicubical parabolas for different values of a. In mathematics, a semicubical parabola is a curve defined parametrically as The parameter can be removed t …   Wikipedia

  • Semicubical parabola — Semicubical Sem i*cu bic*al, a. (Math.) Of or pertaining to the square root of the cube of a quantity. [1913 Webster] {Semicubical parabola}, a curve in which the ordinates are proportional to the square roots of the cubes of the abscissas. [1913 …   The Collaborative International Dictionary of English

  • Parabola — Pa*rab o*la, n.; pl. {Parabolas}. [NL., fr. Gr. ?; so called because its axis is parallel to the side of the cone. See {Parable}, and cf. {Parabole}.] (Geom.) (a) A kind of curve; one of the conic sections formed by the intersection of the… …   The Collaborative International Dictionary of English

  • Semicubical — Sem i*cu bic*al, a. (Math.) Of or pertaining to the square root of the cube of a quantity. [1913 Webster] {Semicubical parabola}, a curve in which the ordinates are proportional to the square roots of the cubes of the abscissas. [1913 Webster] …   The Collaborative International Dictionary of English

  • semicubical — “+ adjective Etymology: semi + cubical : characterized by the square root of the cube of a quantity a semicubical parabola …   Useful english dictionary

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  • Parabolas — Parabola Pa*rab o*la, n.; pl. {Parabolas}. [NL., fr. Gr. ?; so called because its axis is parallel to the side of the cone. See {Parable}, and cf. {Parabole}.] (Geom.) (a) A kind of curve; one of the conic sections formed by the intersection of… …   The Collaborative International Dictionary of English

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  • Fermat, Pierre de — born Aug. 17, 1601, Beaumont de Lomagne, France died Jan. 12, 1665, Castres French mathematician. Of Basque origin, Fermat studied law at Toulouse and developed interests in foreign languages, Classical literature, ancient science, and… …   Universalium

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