GeoXACML stands for Geospatial eXtensible Access Control Markup Language. It defines a geo-specific extension to XACML Version 2.0, as it was ratified by OASIS standards organization on 1 February 2005.
GeoXACML version 1.0.1 is standardized by the Open Geospatial Consoritum (OGC). For more information on this standard, please follow Geospatial eXtensible Access Control Markup Language (GeoXACML).
More information is available at the GeoXACML home page Geospatial Extensible Access Control Markup Language