Plain English Meaning
What the ground looks like in terms of its bumps, dips, and rises. The lay of the land.
Full Definition
The shape and physical features of the land surface — including hills, valleys, ridges, mountains, canyons, and large structures — that influence how wind flows near the ground.
Context Anchor
Seen in discussions of wind near terrain, especially during takeoff, landing, and low-altitude flight.
Derivation
From Greek 'topos' (place) and 'graphia' (writing or describing). Topography literally means 'a description of a place' — in aviation it refers to the physical shape of that place: its rises, dips, and features.
Why Pilots Care
Pilots must anticipate how ridges, valleys, and other terrain features can create turbulence, sudden wind shifts, or that affect and .