[lawr-an, lohr-] 
| a system of long-range navigation whereby the latitude and longitude of a ship or airplane are determined from the time displacement between radio signals from two or more fixed transmitters. |
| lo·ran (lôr'ān', lōr'-) n. A long-range navigational system in which position is determined by an analysis involving the time intervals between pulsed radio signals from two or more pairs of ground stations of known position. [lo(ng-)ra(nge) n(avigation).] |
| loran long range radio aid to navigation |