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Words related to conic

con·ic
C c

  • conic section

    one of a group of curves formed by the intersection of a plane and a right circular cone. It is either a circle, ellipse, parabola, or hyperbola, depending on the eccentricity, e, which is constant for a particular curve e = 0 for a circle; e<1 for an ellipse; e = 1 for a parabola; e>1 for a hyperbola

  • ellipse

    A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by an oblique plane that does not intersect the base.

  • conic projection

    a map projection on which the earth is shown as projected onto a cone with its apex over one of the poles and with parallels of latitude radiating from this apex

  • conicoid

    a quadric, especially a hyperboloid, paraboloid, or ellipsoid.

  • conoid

    a geometric surface formed by rotating a parabola, ellipse, or hyperbola about one axis

  • hyperbola

    the set of points in a plane whose distances to two fixed points in the plane have a constant difference; a curve consisting of two distinct and similar branches, formed by the intersection of a plane with a right circular cone when the plane makes a greater angle with the base than does the generator of the cone. Equation: x 2 /a 2 − y 2 /b 2 = ±1.
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