from the GNU version of the Collaborative International Dictionary of English
- n. a spheroid; a solid figure generated by the revolution of an ellipse about one of its axes. It is called a prolate spheroid, or prolatum, when the ellipse is revolved about the major axis, and an oblate spheroid, or oblatum, when it is revolved about the minor axis.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a shape that is generated by rotating an ellipse around one of its axes
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