An affordance is the possibility of an action on an object or environment. Additional meanings have developed, largely a result of misinterpretations. The original definition in psychology includes all actions that are physically possible.
Affordance - Wikipedia, the free encyclopedia
Example:The key modes of communication on Twitter are linked to the specific technological affordances of Twitter as a platform, and can be understood as corresponding to micro, meso, and macro layers of information exchange and user interaction.(Twitter and Society, p.16).
