A holon is something that is simultaneously a whole in and of itself, as well as a part of a larger whole.
Holons are self-reliant units that possess a degree of independence and can handle contingencies without asking higher authorities for instructions.
A holon is a subsystem within a larger system: it is simultaneously an evolving, self-organizing, dissipative structure maintained by the throughput of matter–energy and information–entropy, connected to other holons; it is a whole in itself but also, at the same time, it is nested within another holon and is thus a part of something much larger than itself.
(By Wikipedia)
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