The Collaborative International Dictionary of English v.0.48:

Oblate \Ob*late"\, a. [L. oblatus, used as p. p. of offerre to
   bring forward, offer, dedicate; ob (see Ob-) + latus borne,
   for tlatus. See Tolerate.]
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   1. (Geom.) Flattened or depressed at the poles; as, the earth
      is an oblate spheroid.
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   2. Offered up; devoted; consecrated; dedicated; -- used
      chiefly or only in the titles of Roman Catholic orders.
      See Oblate, n.
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   Oblate ellipsoid or Oblate spheroid (Geom.), a solid
      generated by the revolution of an ellipse about its minor
      axis; an oblatum. Contrasted with prolate spheroid. See
      Ellipsoid of revolution, under Ellipsoid.
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The Collaborative International Dictionary of English v.0.48:

Spheroid \Sphe"roid\, n. [L. spheroides ball-like, spherical,
   Gr. ???; ???? sphere + e'i^dos form: cf. F. sph['e]ro["i]de.]
   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.
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   Oblate spheroid, Prolate spheroid. See Oblate,
      Prolate, and Ellipsoid.
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