GNU Collaborative International Dictionary of English

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Found 2 definitions

  1.       
    
    Prolate , 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.
    1913 Webster

    Prolate cycloid. See the Note under Cycloid. -- Prolate ellipsoid or Prolate spheroid (Geom.), a figure generated by the revolution of an ellipse about its major axis. Contrasted with oblate spheroid. See Ellipsoid of revolution, under Ellipsoid.

    1913 Webster

  2.       
    
    Spheroid , n. [L. spheroides ball-like, spherical, Gr. ; sphere + εἶδος form: cf. F. sphéroïde.] A body or figure approaching to a sphere, but not perfectly spherical; esp., a solid generated by the revolution of an ellipse about one of its axes.
    1913 Webster

    Oblate spheroid, Prolate spheroid. See Oblate, Prolate, and Ellipsoid.

    1913 Webster