footprint

noun

• 1the impression left by a foot or shoe on the ground or a surface.
• the impact on the environment of human activity in terms of pollution, damage to ecosystems, and the depletion of natural resources:these countries are so populous that they can have a very big footprint
• Computing the amount of memory or disk space required by a program.

• 2the area covered by something, in particular:
• the area beneath an aircraft or a land vehicle which is affected by its noise or pressure.
• the area in which a broadcast signal from a particular source can be received.
• the space taken up on a surface by a piece of computer hardware.