location definition LocationDefinition Matthew Diller William R. Hogan An information content entity that specifies a geographical region by (1) listing the names of other geographical regions whose mereological sum constitutes it and optionally (2) listing the names of other geographical regions that are subsequently subtracted from the mereological sum. An information content entity that specifies a geographical region by (1) listing the names of other geographical regions whose mereological sum constitutes it and optionally (2) listing the names of other geographical regions that are subsequently subtracted from the mereological sum. information content entity