If we take a look at Wikipedia, we see the following definition:
Self-organization is a process of attraction and repulsion in which the internal organization of a system, normally an open system, increases in complexity without being guided or managed by an outside source. Self-organizing systems typically (but not always) display emergent properties.
The above is a pretty complex definition, not useful for this quest. The context that is important for me is an organization, hence the part how to support self-organization in organizations in the problem statement, and I’m also interested in how to empower employees for self-organization. Therefore I have to construct a workable definition. The most important elements that are important in this context are people. After reading some scientific material, I think the definition of Francis Heylighen is better:
Self-organization is a process where the organization (constraint, redundancy) of a system spontaneously increases, i.e. without this increase being controlled by the environment or an encompassing or otherwise external system.