(mathematics) A plane curve having the equation y=a.x³+b.x²+c.x+d.

(optics) A curve to which the ray of light, reflected or refracted by another curve, are tangents, the reflecting or refracting curve and the luminous point being in one plane.

(mathematics) The bell-shaped curve that is typical of the normal distribution.

(idiomatic) Changing before competitors. / (idiomatic) Above average; generally performing well.

(mathematics, biology) An S-shaped curve that models the growth of many ecosystems.

(astronomy) a graph of the intensity of radiation from an astronomical object as it changes with time

(mathematics) Synonym of Lissajous figure

(mathematics) the locus of points in the Euclidean plane that satisfies some geometric or algebraic definition; a curve in a plane (as opposed to higher-dimensional space)

(mathematics) Any plane curve that consists of loops (petals) emanating from a central point.

(mathematics) any curve in three-dimensional space; includes any plane curve as a subset