spher·​oid | \ ˈsfir-ˌȯid How to pronounce spheroid (audio) , ˈsfer- \

Definition of spheroid

: a figure resembling a sphere also : an object of approximately spherical shape

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Other Words from spheroid

spheroidal \ sfi-​ˈrȯi-​dᵊl How to pronounce spheroidal (audio) \ or less commonly spheroid adjective
spheroidally \ sfi-​ˈrȯi-​dᵊl-​ē How to pronounce spheroidally (audio) \ adverb

Examples of spheroid in a Sentence

Recent Examples on the Web To take the curvature of the Earth into account, surveyors used spheroid models—rough, rounder precursors to the more mathematically complex ellipsoid models. Freddie Wilkinson, National Geographic, "How do you measure Everest? It's complicated by frostbite—and politics.," 28 Sep. 2020 In some cases, material from this disk forms a blob-like spheroid, but the YORP effect continues to shape it. Jennifer Leman, Popular Mechanics, "Queen's Brian May Is Investigating All the Asteroids," 3 June 2020 But Earth is an oblate spheroid, meaning a 3D shape created by an ellipsis that’s rotating around its shorter axis—like a more rounded jelly donut. Caroline Delbert, Popular Mechanics, "Sad: This Isotope Lives for Just 8 Minutes and Leaves Behind a Wobbly Nucleus," 12 Feb. 2020 The nucleus is a prolate spheroid, like a rugby ball, and should lead to discovery of more wobbly isotopes. Caroline Delbert, Popular Mechanics, "Sad: This Isotope Lives for Just 8 Minutes and Leaves Behind a Wobbly Nucleus," 12 Feb. 2020 The team created a model of the ventral region by adding an extra protein to cortical spheroids at just the right time. Simon Makin, Scientific American, "“Organoids” Reveal How Human Forebrain Develops," 24 Jan. 2020 Yet the integrity of the game continues to be threatened by a spheroid that costs about $9 and could be affected by even the simple act of a mosquito buzzing around the horsehide of a cow. Gabe Lacques, USA TODAY, "MLB study on juiced balls can't explain much: 'Have to accept ... the baseball is going to vary'," 11 Dec. 2019 Ghawar, Khurais, Shaybah—comes to Abqaiq to be processed, coursing through its sprawling network of pipes, spheroids and stabilisation towers before being sent to customers around the world. The Economist, "Despite American shale, oil markets still rely on Saudi Arabia," 19 Sep. 2019 The spheroids will need to be drained, cleaned and inspected. David Sheppard, Los Angeles Times, "Attack on Saudi facility exposes world economy’s ‘Achilles heel’," 16 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spheroid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of spheroid

1570, in the meaning defined above

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Time Traveler for spheroid

Time Traveler

The first known use of spheroid was in 1570

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Statistics for spheroid

Last Updated

5 Oct 2020

Cite this Entry

“Spheroid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spheroid. Accessed 23 Oct. 2020.

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More Definitions for spheroid


How to pronounce spheroid (audio)

English Language Learners Definition of spheroid

technical : an object that is somewhat round but not perfectly round

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