Global Positioning System /(glō"b'l pō̇*zĭsh"ŭn*ĭng sĭs"tĕm)/

Glob·al Po·si·tion·ing Sys·tem

Global Positioning System

n.
  1. A worldwide system of electronic navigation in which a vessel, aircraft or missile determines its latitude and longitude by measuring the transmission time from several orbiting satellites. GPS is more precise than any other navigation system available, yielding position accurate within 10 meters 95% of the time.