ellipsoid
noun
el·lip·soid
i-ˈlip-ˌsȯid 
e-
: a surface all plane sections of which are ellipses or circles
Examples of ellipsoid in a Sentence
Recent Examples on the Web
The asteroid, which before the DART encounter looked like a ball that was a bit plump in the waist, now appears to be shaped more like a watermelon - or, technically, a triaxial ellipsoid, scientists said on Tuesday.
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Fox News, 20 Mar. 2024
When the geoid is above the ellipsoid, the difference is subtracted.
—Freddie Wilkinson, National Geographic, 28 Sep. 2020
Again, by elementary optics and geometry, light rays originating at one focus of a hollow reflective ellipsoid are reflected to the other focus by its inside surface.
—Quanta Magazine, 1 Apr. 2020
The earth is slightly thicker in the equator, making it an ellipsoid, technically.
—Caroline Delbert, Popular Mechanics, 17 Dec. 2019
From radar observations, Psyche the asteroid appears ellipsoid in shape, about as wide as Massachusetts.
—Kenneth Chang, New York Times, 6 Jan. 2017
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Fox News, 20 Mar. 2024
When the geoid is above the ellipsoid, the difference is subtracted.
—Freddie Wilkinson, National Geographic, 28 Sep. 2020
Again, by elementary optics and geometry, light rays originating at one focus of a hollow reflective ellipsoid are reflected to the other focus by its inside surface.
—Quanta Magazine, 1 Apr. 2020
The earth is slightly thicker in the equator, making it an ellipsoid, technically.
—Caroline Delbert, Popular Mechanics, 17 Dec. 2019
From radar observations, Psyche the asteroid appears ellipsoid in shape, about as wide as Massachusetts.
—Kenneth Chang, New York Times, 6 Jan. 2017
Cite this Entry
“Ellipsoid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ellipsoid. Accessed 30 Jun. 2025.
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