Astronomy. The time taken for a celestial object or a point on the celestial sphere to make one complete circuit in movement of this kind; an…
| 单词 | θ95203 |
| 释义 | the world > time > period > cycle of time > [noun] > astronomical cycle (7) revolutionc1400 Astronomy. The time taken for a celestial object or a point on the celestial sphere to make one complete circuit in movement of this kind; an… season1535 A period of time astronomically fixed or recurring. †Also, a period or phase of an eclipse. Subcategories:— cycles of celestial bodies (5) |
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