NM

Definition of “NM”

“NM” stands for “nautical mile,” which is a unit of measurement used in navigation and aviation. It is defined as one minute of arc (1/60th of a degree) of a great circle on the Earth’s surface, equivalent to approximately 1.852 kilometers or 1.1508 miles. The nautical mile is primarily used to measure distances at sea and in the air because it takes into account the Earth’s curvature and provides a more accurate representation of distance over long distances. Therefore, it is an essential tool for pilots, sailors, and navigators, who rely on precise measurements to reach their destination safely and efficiently.