The natural world or ecosystem.
The set of variables and their values in a namespace that an operating system associates with a process.
The surroundings of, and influences on, a particular item of interest.
All the elements that affect a system or its inputs and outputs.
A particular political or social setting, arena or condition.
The environment of a function at a point during the execution of a program is the set of identifiers in the function's scope and their bindings at that point.
The software and/or hardware existing on any particular computer system.
The natural, clean air from outside, as opposed to the relatively stuffy air inside.