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.]
1. (Geom.) Flattened or depressed at the poles; as, the earth
is an oblate spheroid.
2. Offered up; devoted; consecrated; dedicated; -- used
chiefly or only in the titles of Roman Catholic orders.
See Oblate, n.
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.