astronomical azimuth

astronomical azimuth

[‚as·trə′näm·ə·kəl ′az·ə·məth]

(geodesy)

The angle between the astronomical meridian plane of the observer and the plane containing the observed point and the true normal (vertical) of the observer, measured in the plane of the horizon, preferably clockwise from north.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.