Plain English Meaning
A computer file that stores the height of the ground across an area, point by point, so software can draw or calculate the shape of the terrain.
Full Definition
A digital file containing terrain elevation data for the bare ground surface, organized as a grid of points with each point assigned a height value above a reference such as mean sea level. The model represents the shape of the land itself, without buildings, trees, or other surface features.
Context Anchor
Seen in terrain databases, moving-map displays, flight-planning software, and systems that warn pilots about nearby terrain.
Derivation
Digital means stored as numbers a computer can read. Elevation means height above a reference point. Model here means a representation of something real -- in this case, the shape of the ground -- not a physical object or a perfect copy.
Why Pilots Care
Provides the terrain data that powers modern safety systems and helps pilots maintain safe clearance over mountains and obstacles.
Analogy
Like a detailed raised-relief map that a computer can read instantly instead of a paper contour chart.
Grounding Statement
Picture the ground covered by a fine grid, with each square labeled by how high that piece of ground is.
Intuition Check
A Digital Elevation Model is not a photograph or a normal visual map. It is terrain height data that a computer can use to draw or calculate terrain information.
Example Sentence 1
The terrain awareness system uses a digital elevation model to compare the aircraft's position against the height of the ground ahead.
Example Sentence 2
During flight planning the pilot checked the Digital Elevation Model to confirm minimum safe altitudes through the pass.