Oblateness | Article about oblateness by The Free Dictionary
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oblateness (ob -layt-niss, ob-layt -) (ellipticity; flattening) A parameter specifying the degree to which the form of a celestial object, such as a planet, differs from a true sphere, largely as a result of rotation. It is numerically equal to the difference between the equatorial and polar radii of the object divided by the equatorial radius. Saturn, with an oblateness of 0.108, is the most oblate planet in the Solar System.
The distortion from a spherical shape in which the diameter at the equator exceeds that at the poles.
References in periodicals archive
On the Determination of the Rotational Oblateness of Achernar.
The solar oblateness and its relationship with the structure of the tacholine and the Sun's subsurface.
In comparison, the second and third terms in (11) are the oblateness
and relativistic corrections respectively and they produce the following values based on the given parameters:
The existence of gentle solar oblateness
has been recognized for nearly thirty years.
 is a direct manifestation of solar rotation and can best be understood by examining the rotation of liquid masses .