单词	ellipsoid
释义	ellipsoid noun el·​lip·​soid i-ˈlip-ˌsȯid  e- : a surface all plane sections of which are ellipses or circles ellipsoidal i-ˌlip-ˈsȯi-dᵊl  (ˌ)e- adjective or less commonly ellipsoid Example Sentences Recent Examples on the Web 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 Word History First Known Use 1721, in the meaning defined above
随便看	ultimatums ultimo ultimogenitary ultimogeniture ultimogenitures ultimus haeres ultimus heres Ultonian ultonians ultra ultra premium ultra vires ultra-atomic ultra-civilized ultra-commercial ultra-pasteurized ultra-premium ultra-rare ultra-wide ultrabasic ultrabasics ultrabright ultracareful ultracasual ultracautious

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