A surname from Italian. / Giovanni Domenico Cassini, an Italian astronomer.

(geometry) A plane curve defined as the set (or locus) of points in the plane such that the product of the distances to two fixed points is constant (related to an ellipse, for which the sum of the distances is constant).

plural of Cassini oval

(astronomy) A 4,800 km (3,000 mi) wide region between the A Ring and B Ring in Saturn.

Alternative form of Cassini oval

Of or relating to the astronomer Giovanni Domenico Cassini.

plural of Cassinian oval