Real Dictionary

shoran in American English
noun: a system for aircraft navigation in which two signals sent from an aircraft are received and answered by two fixed transponders, the round-trip times of the signals enabling the navigator to determine the aircraft's position

shoran in British English
an electronic navigational system used in airplanes, guided missiles, etc., in which signals are sent to a pair of ground transponders whose answering signals allow the aircraft's precise position to be determined
noun: a short-range radar system by which an aircraft, ship, etc, can accurately determine its position by the time taken for a signal to be sent to two radar beacons at known locations and be returned