the GNU version of the Collaborative International Dictionary of English
n. The quality or state of being oblate.
The Century Dictionary and Cyclopedia
n. The condition of being oblate or flattened at the poles.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the property possessed by a round shape that is flattened at the poles
Word Usage
"If he looked carefully, he could just see that Saturn was not a perfect disk; on either side was something that no unaided human eye had ever seen before - the slight oblateness caused by the presence of the rings."