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az·i·muth /ˈæzməθ, ˈæzə-/

方位,方位角

From: Network Terminology

azimuth

方位

Az·i·muth n. Astron. & Geodesy (a) The quadrant of an azimuth circle. (b) An arc of the horizon intercepted between the meridian of the place and a vertical circle passing through the center of any object; as, the azimuth of a star; the azimuth or bearing of a line surveying.

Note: ☞ In trigonometrical surveying, it is customary to reckon the azimuth of a line from the south point of the horizon around by the west from 0° to 360°.

**Azimuth circle**, or **Vertical circle**, one of the great circles of the sphere intersecting each other in the zenith and nadir, and cutting the horizon at right angles. --*Hutton.*

**Azimuth compass**, a compass resembling the mariner's compass, but having the card divided into degrees instead of rhumbs, and having vertical sights; used for taking the magnetic azimuth of a heavenly body, in order to find, by comparison with the true azimuth, the variation of the needle.

**Azimuth dial**, a dial whose stile or gnomon is at right angles to the plane of the horizon. --*Hutton.*

**Magnetic azimuth**, an arc of the horizon, intercepted between the vertical circle passing through any object and the magnetic meridian. This is found by observing the object with an azimuth compass.

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From: WordNet (r) 2.0

azimuth

n : the azimuth of a celestial body is the angle between the

vertical plane containing it and the plane of the

meridian [syn: AZ]