Design is the creation of a proposition in a medium, using tools as part of a process. While all design is innately creative, the nature of each element has the potential to differ between different types of designers:
Proposition may be objects that are visible (a building, a dress, a kettle) or invisible (software code, policy, process).
Medium may take various forms. For example: physical (pencil sketch, 3D model, painting); spatial (a building, a street grid); digital (computer game, app, sound); or temporal (a process or sequence).
Tools may vary (whether a pencil, a knife, a keyboard) in creative and reflective/analytic modes.
Process may include one or more means of design inspiration and design review, working alone or in collaboration with others.
Source: Design Council UKTell a friend