An astronomical instrument; (perhaps) a dial, a clock. Obsolete. rare.
| 单词 | θ1493 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > [noun] (34) musterc1450 An astronomical instrument; (perhaps) a dial, a clock. Obsolete. rare. alidadea1500 A pivoted sighting device or pointer which can be aligned against a circular scale of degrees and typically forms part of an astrolabe, plane… Subcategories:— angle-measuring (7) — astrolabe (16) — other (5) — parts of (4) |
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