Digital Elevation Model (DEM)

DEM - Digital elevation model, a data exchange format developed by the United States Geological Survey for geographical and topographical data.

[Category=Geospatial ]

Digital Elevation Model - Source: http://www.eurogeographics.org/Projects/GDDD/GDDD/lists/products.htm#52

"The Digital Elevation Model (DEM) only contains elevation data. Normally, the height data are arranged in a matrix. Also, vector based contour lines and spot elevations are considered as DEM. "

[Category=Geospatial ]

Source: Open Geospatial Consortium, 10 June 2011 09:03:27, http://www.opengeospatial.org/ogc/glossary

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DEM - 

   (1) [data models] Acronym for digital elevation model. The representation of continuous elevation values over a topographic surface by a regular array of z-values, referenced to a common datum. DEMs are typically used to represent terrain relief.
   (2) [data models] A format for elevation data, tiled by map sheet, produced by the National Mapping Division of the USGS.

[Category=Geospatial ]

Source: esri, 23 March 2012 07:52:18, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation