noun

• The surroundings of, and influences on, a particular item of interest.
• The natural world or ecosystem.
• All the elements that affect a system or its inputs and outputs.
• A particular political or social setting, arena or condition.
• (computing) The software and/or hardware existing on any particular computer system.
• (programming) 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.
• (computing) The set of variables and their values in a namespace that an operating system associates with a process.