A piece of ground having specific characteristics or military potential WordNet 3.0 & Open English WordNet

Terrain or relief involves the vertical and horizontal dimensions of land surface. Wikipedia

Vertical and horizontal dimension of land surface. Wikipedia Disambiguation

Vertical and horizontal dimension of land surface Wikidata

The physical shape, configuration or general unevenness of a part of the Earth's surface, considered with reference to variation of height and slope or to irregularities of the land surface; the elevation or difference in elevation, considered collectively, of a land surface. OmegaWiki