| 单词 | semimajor axis |
| 释义 | semimajor axis[ sem-ee-mey-jer, sem-ahy-, sem-ee-, sem-ahy- ] / ˈsɛm iˈmeɪ dʒər, ˈsɛm aɪ-, ˌsɛm i-, ˌsɛm aɪ- / nounGeometry. one half the major axis of an ellipse. Astronomy. one half the major axis of the ellipse that one celestial body describes around another, as a planet around the sun or a satellite around a planet, equivalent to the mean distance between the two bodies. Origin of semimajor axisFirst recorded in 1925–30; semi- + major Words nearby semimajor axissemilunar cartilage, semilunar conjunctival fold, semilunar ganglion, semilunar line, semilunar valve, semimajor axis, semimatte, semimembranosus, semimembranous, semimicroanalysis, semiminor axis Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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