Loran
Concise Oxford English Dictionary © 2008 Oxford University Press:
Loran /ˈlɔːran, ˈlɒ-/
▶noun a system of long-distance navigation in which position is determined from the intervals between signal pulses received from widely spaced radio transmitters.
– origin 1940s: from lo(ng-)ra(nge) n(avigation).
'Loran' also found in these Oxford entries:
