An instrument for making angular measurements, esp. the altitude of celestial or distant terrestrial objects, consisting of a graduated…
| 单词 | θ1416 |
| 释义 | the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > quadrant or sextant > quadrant (6) quadrant?c1400 An instrument for making angular measurements, esp. the altitude of celestial or distant terrestrial objects, consisting of a graduated… quadrate1551 = quadrant, n.1 7. Now historical. Subcategories:— types of (4) |
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