What is the appropriate term for the area between two navigation points in aviation terminology?

The correct term for the area between two navigation points in aviation terminology is referred to as a "Leg." In aviation, each segment of a flight path between two defined navigation points is called a leg. This terminology is commonly used during flight planning and execution to describe the specific sections of the route.

For instance, when a flight plan is created, it may involve multiple legs – each representing the distance and direction between waypoints. Understanding this concept is critical for pilots, as it helps in navigation management and maintaining situational awareness during flight.

In contrast to "leg," other terms like "fix" typically refer to a specific geographical location or an identified point in space that can be used for navigation or to determine an aircraft's position, rather than denoting a segment between two points. A "route" describes a more extensive path that encompasses several legs, while "detour" usually refers to an alternative path taken due to unforeseen circumstances, such as weather or airspace restrictions. Thus, "leg" is the most precise term for defining the area specifically between two navigation points.