Coverage

coverage - Source: The OpenGIS® Abstract Specification Topic 6: Schema for coverage geometry and functions, Version 7 .

A feature that associates positions within a bounded space (its spatiotemporal domain) to feature attribute values (its range). GIS coverages (including the special case of Earth images) are two- (and sometimes higher-) dimensional metaphors for phenomena found on or near a portion of the Earth's surface. A coverage can consist of a set of features or Feature Collections. Earth images are seen as Grid Coverages that contain features whose geometries are of type "set of cells" or "set of pixels" (surfaces).

[Category=Geospatial ]

Source: Open Geospatial Consortium, 07 June 2011 09:19:41, http://www.opengeospatial.org/ogc/glossary

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Coverage - 

   (1) The individual members of a target population about which information can be obtained.
   (2) The part of a population covered by a sample (for example 50% coverage indicates that 50% of the target population was examined).

[Category=Data Quality ]

Source: Australian Bureau of Statistics, 21 November 2012 18:49:51, http://www.nss.gov.au/dataquality/glossary.jsp