Answer:
A single definable purpose, end-item or result. This is usually specified in terms of cost, schedule and performance requirements.
Every project is unique. It requires the doing of something different, something that was not done previously. Even in what are often called “routine” projects such as home construction, the variables such as terrain, access, zoning laws, labour market, public services and local utilities make each project different. A project is a one-time, once-off activity, never to be repeated exactly the same way again.
Projects are temporary activities. A project is an ad hoc organization of staff, material, equipment and facilities that is put together to accomplish a goal. This goal is within a specific time-frame. Once the goal is achieved, the organization created for it is disbanded or sometimes it is reconstituted to begin work on a new goal (project).