An arc of the heavens extending from the zenith to the horizon which it cuts at right angles; the quadrant of a great circle of the sphere…
| 单词 | θ50 |
| 释义 | the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > azimuth circle (7) azimuthc1400 An arc of the heavens extending from the zenith to the horizon which it cuts at right angles; the quadrant of a great circle of the sphere… vertical circle1559 Of or pertaining to, placed or situated at, passing through, the vertex or zenith; occupying a position… an azimuth-circle (see azimuth, n. 1). zenith line1585 (a) an arc from the zenith to the horizon, which it intersects at right angles (= azimuth, n. 1), esp. to the point due east on the horizon; (b) a… vertical1669 A vertical circle, line, or plane. Subcategories:— zenith point (2) — prime vertical (1) |
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