Pro″late (?), a. [L. prolatus, used as p. p. of proferre to bring forth, to extend; pro + latus, p. p. See Pro-, and Tolerate.] Stretched out; extended; especially, elongated in the direction of a line joining the poles; as, a prolate spheroid; — opposed to oblate.
Prolate cycloid. See the Note under Cycloid. — Prolate ellipsoidorspheroid(Geom.), a figure generated by the revolution of an ellipse about its major axis. See Ellipsoid of revolution, under Ellipsoid.