Azimuth - 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.
http://en.wikipedia.org/wiki/Azimuth
--Yisdub 09:39, 4 October 2007 (PDT)