A circular path followed by a planet, an epicycle; = apsis, n. 1. Obsolete. rare.
| 单词 | θ414 |
| 释义 | the world > the universe > planet > planetary movement > [noun] > orbit (22) augec1392 A circular path followed by a planet, an epicycle; = apsis, n. 1. Obsolete. rare. sphere1595 The orbit of a planet. Also figurative. apsis1601 Circumference, circuit; orbit of a planet. Obsolete. polar axis1724 Geography and Astronomy. The axis of rotation of the earth or other celestial object, passing through the two poles. Subcategories:— older astronomy (3) — apsis (11) — node (1) — major axis (1) — deflection (1) — eccentricity (1) |
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