How it’s pronounced: Geo-cashing, like cashing a check.
What it is: Geocaching is an entertaining adventure game for Global Positioning System users. The basic idea is to have individuals and organizations set up caches all over the world and share the locations of these caches on the Internet. GPS users can use the location coordinates to find the caches.
Global Positioning System defined: The Global Positioning System is a constellation of U.S. government satellites providing the most advanced and accurate positioning and navigation service in the world. Equipped with atomic clocks, 24 GPS satellites orbit 12,000 miles above the Earth transmitting the exact time and their position in space.
What a GPS device is: A GPS unit is an electronic device that can determine your approximate location within 6 to 20 feet anywhere on the planet. Coordinates are normally given in longitude and latitude. You can use the unit to navigate from your location to another location. Some units have their own maps, built-in electronic compasses and voice navigation, depending on the complexity of the device.
The cost of a GPS unit: Units can range from $100 to $1,000, depending on the kind of capabilities you are looking for. A $100 unit can get you within 20 feet of most geocaches.