[ sfeer-oid ]
/ ˈsfɪər ɔɪd /


a solid geometrical figure similar in shape to a sphere, as an ellipsoid.



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Origin of spheroid

1655–65; < Latin sphaeroīdēs < Greek sphairoeidḗs. See sphere, -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for spheroid

British Dictionary definitions for spheroid

/ (ˈsfɪərɔɪd) /


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

Medical definitions for spheroid

[ sfîroid′, sfĕr- ]


Having a generally spherical shape.

Other words from spheroid

spheroid′ n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for spheroid

[ sfîroid′ ]

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.