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Ordnance Survey – Great Britain's national mapping agency

At its simplest level a gazetteer is a dictionary of geographical names. Every record contains a description of the location, providing the user with a simple means of identification and reference. An electronic gazetteer works in exactly the same way. It is a file or database listing every feature of a particular type (such as a building, a road or a pond) within a defined area. The user can locate the position of the feature and query any additional information attached to it.