'Cubical parabola' definitions:
Definition of 'Cubical parabola'
From: GCIDE
- Cubic \Cu"bic\ (k?"b?k), Cubical \Cu"bic*al\ (-b?-kal), a. [L. cubicus, Gr. ?????: cf. F. cubique. See Cube.]
- 1. Having the form or properties of a cube; contained, or capable of being contained, in a cube. [1913 Webster]
- 2. (Crystallog.) Isometric or monometric; as, cubic cleavage. See Crystallization. [1913 Webster]
- Cubic equation, an equation in which the highest power of the unknown quantity is a cube.
- Cubic foot, a volume equivalent to a cubical solid which measures a foot in each of its dimensions.
- Cubic number, a number produced by multiplying a number into itself, and that product again by the same number. See Cube.
- Cubical parabola (Geom.), two curves of the third degree, one plane, and one on space of three dimensions. [1913 Webster]
Definition of 'cubical parabola'
From: GCIDE
- 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]