As nouns the difference between oblate and spheroid
is that
oblate is (
roman catholic church) a person dedicated to a life of religion or monasticism, especially a member of an order without religious vows or a lay member of a religious community while
spheroid is a solid of revolution generated by rotating an ellipse about its major (prolate), or minor (oblate) axis.
As adjectives the difference between oblate and spheroid
is that
oblate is flattened or depressed at the poles while
spheroid is of a shape similar to a squashed sphere.