hyperbola

"Not every hyperbola is a burial or a grave — there's tree roots, there's masses, and other things in the substrate," Small says.

Take a cone and cut it up; you get circles, ellipses, parabolas, and hyperbolas, depending on how you slice it.

But most of the world of commodities is defined by hyperbola- or parabola-shaped curves.

“You can make a complete set of all four sconic sections: circle, ellipse, parabola and hyperbola,” the site explains, in step-by-step instructions that could easily swallow your entire weekend.

The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conjugate axis.