Azimuth

n. angle of the horizon

Azimuth is a mathematical concept defined as the angle, usually measured in degrees (°), between a reference plane and a point. This concept is used in many practical applications including navigation, astronomy, mapping, mining and artillery. The word azimuth is derived from the Arabic السمت ('as-sumūt') which means the ways, referring to the ways or directions a person faces.
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Noun
1. the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
(synonym) AZ
(hypernym) angle

n. azimuth, angle of the horizon (Astronomy)

(n.)
The quadrant of an azimuth circle.
  

(n.)
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.