Geospatial metadata (also geographic metadata, or simply metadata when used in a geographic context) is a type of metadata that is applicable to objects that have an explicit or implicit geographic extent, in other words, are associated with some position on the surface of the Globe. Such objects may be stored in a geographic information system (GIS) or may simply be documents, datasets, images or other objects, services, or related items that exist in some other native environment but whose features may be appropriate to describe in a (geographic) metadata catalogue (may also be known as a data directory, data inventory, etc.).
Read more about Geospatial Metadata: Definition, History, ISO 19115: Geographic Information - Metadata, ISO 19139 Geographic Information Metadata XML Schema Implementation, Metadata Directories (metadata Catalogues, Data Directories), Geospatial Metadata Tools