a circle whose plane is perpendicular to a given plane; (Astronomy) a great circle of the celestial sphere whose plane is perpendicular to the…
| 单词 | θ159 |
| 释义 | the world > the universe > celestial sphere > [noun] > right sphere (2) right circlec1400 a circle whose plane is perpendicular to a given plane; (Astronomy) a great circle of the celestial sphere whose plane is perpendicular to the… right sphere1556 the celestial or terrestrial sphere when its equator is perpendicular to the horizon (as it is only at the earth's equator); cf. oblique sphere n. at… |
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