dumbbell curve

English

Etymology

From dumbbell +‎ curve, since the shape loosely resembles a dumbbell.

Dumbbell curve with equation y² = x⁴-x⁶.

Noun

dumbbell curve (plural dumbbell curves)

1. (mathematics) Any of a family of closed curves having two lobes; they satisfy the general equation y² = α²(x⁴ - x⁶).