Plain English Meaning
A point in the sky pinpointed by how far you are from a ground-based navigation station, usually paired with a direction from that station.
Full Definition
A geographical position on a route or approach that is identified and defined by a specific distance, in nautical miles, from a Distance Measuring Equipment (DME) ground station, usually combined with a specific radial or course from a VOR or other navigation aid.
Context Anchor
Seen on instrument charts, route descriptions, approach procedures, and instructions.