What is the opposite direction of an azimuth called?

The term that describes the opposite direction of an azimuth is known as the back azimuth. In navigation and orienteering, an azimuth is typically defined as an angle measured in degrees from a specific reference direction, usually true north. The opposite direction can be found by adding or subtracting 180 degrees from the original azimuth.

For instance, if you have an azimuth of 60 degrees, the back azimuth would be 240 degrees (60 + 180 = 240). This term is essential for understanding how to navigate back to a starting point or to orient oneself in the opposite direction from a given bearing. Understanding this concept is crucial for effective navigation and map reading, particularly in military and outdoor settings.