- a solid geometrical figure similar in shape to a sphere, as an ellipsoid.
Origin of spheroid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for spheroid
Indignantly he had taken his calculations, his blue prints of the spheroid, along with him.Slaves of Mercury
Its shape is not absolutely spherical, but spheroid—that is, flattened at the poles.Astronomy for Amateurs
The spheroid went to the side, sailing low, and out of bounds.
There was a futile attempt to block the kick, but the spheroid sailed over the bar.
The earth is a spheroid, and hence it pulls and is pulled by the moon with a slightly uncentric attraction.Pioneers of Science
- maths another name for ellipsoid of revolution
- shaped like but not exactly a sphere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for spheroid
Online Etymology Dictionary, © 2010 Douglas Harper
- Having a generally spherical shape.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A three-dimensional geometric surface generated by rotating an ellipse on or about one of its axes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.