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Adjective: prolate  'prow,leyt
  1. Rounded like an egg
    "I think the prolate bodies may probably turn out to be eggs of some small animals";
    - egg-shaped, elliptic, elliptical, oval, oval-shaped, ovate, oviform, ovoid
  2. Having the polar diameter greater than the equatorial diameter
    "a prolate spheroid is generated by revolving an ellipse about its major axis";
    - watermelon-shaped

See also: cucumber-shaped, rounded

Encyclopedia: Prolate