Definition of launchpad. : a nonflammable platform from which a rocket, launch vehicle, or guided missile can be launched.
Terrain is defined as the specific physical features of an area of land. An example of terrain is a rocky and jagged coastline. ground or a tract of ground, esp. with regard to its natural or topographical features or fitness for some use.
topography-precise detailed study of the surface features of a region. geographics, geography-study of the earth's surface; includes people's responses to topography and climate and soil and vegetation.