Complex sentence: Evolutionary self-organization or holigent self-organization refers to a process of spontaneous internal organization of a system accompanied by an increase of systemic complexity, resulting in emergent property that is distinctly different from the constituent parts.
Split into simpler sentences: Evolutionary self-organization or holigent self-organization is the spontaneous internal organization of a system. This process is accompanied by an increase in systemic complexity, resulting in an emergent property that is distinctly different from any of the constituent parts.