1 [standards] For a spatial dataset in ArcGIS 9.1 and previous versions, the defined precision and allowable range for x- and y-coordinates and for m- and z-values, if present.
2 [ESRI software] In ArcGIS Survey Analyst, a constraint that sets the minimum and maximum values for the geometry attributes. The extents of this domain define the precision at which geometry attributes (x, y, z, m, id) can be stored as integers. There is a finite number of integers available in the system, so the x,y spatial domain is analogous to a square grid that always contains the same number of rows and columns.