History of Science. In the medieval form of the Ptolemaic system: designating a sphere held to exist beyond the sphere of fixed stars, usually…
| 单词 | θ112 |
| 释义 | the world > the universe > celestial sphere > zone of celestial sphere > sphere of ancient astronomy > [noun] > crystalline sphere (2) crystalline heaven (also sphere, circle)a1398 History of Science. In the medieval form of the Ptolemaic system: designating a sphere held to exist beyond the sphere of fixed stars, usually… crystalline1483 The crystalline sphere (see sense A. 1). Obsolete. |
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