global positioning system
US /ˈɡloʊbəl pəˈzɪʃənɪŋ ˈsɪstəm/
UK /ˈɡloʊbəl pəˈzɪʃənɪŋ ˈsɪstəm/
1.
a satellite-based navigation system that provides location and time information anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites
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My car has a global positioning system built in.
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We used the global positioning system to find our way through the forest.