Any circle on the surface of a sphere whose plane passes through the centre of the sphere, dividing the sphere into two equal portions (cf. small c…
| 单词 | θ115921 |
| 释义 | the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > closed curve > circle > on a sphere (8) great circle?1530 Any circle on the surface of a sphere whose plane passes through the centre of the sphere, dividing the sphere into two equal portions (cf. small c… great circle1594 spec. Astronomy circle of altitude n. a small circle parallel to the horizon, having its pole in the zenith; an almacantar. circle of curvature n.… secondary circle1704 secondary circle: Geometry and Astronomy, a great circle passing through the poles of another great circle perpendicular to its plane; see also B. 3… secondary1715 Short for secondary circle at sense A. 3e. orthodrome1855 A great circle, or a route forming part of one. Contrasted with loxodrome. separator1869 Mathematics. Subcategories:— not passing through centre (2) |
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