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.
slope - the property possessed by a line or surface that departs from the horizontal; a five-degree gradient. gradient. grade - the gradient of a slope or road or other surface; the road had a steep grade. rake, slant, pitch - degree of deviation from a horizontal plane; the roof had a steep pitch.