/awr'ee en tear"ing, ohr'-/ , n.
a competitive sport, originating in Sweden, that tests the skills of map reading and cross-country running, in which competitors race through an unknown area to find various checkpoints by using only a compass and topographical map, the winner being the finisher with the lowest elapsed time.
[ alter. of Sw orientering (conformed to -EER), equiv. to orienter ( a ) ORIENT (v.) + -ing -ING 1 ]