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English to English noun
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the property possessed by a round shape that is flattened at the poles |  | Example: the oblateness of the planet
source: wordnet30
| 2 |
Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is &frac1x29966;. | | source: webster1913
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