Noun
apeiron (uncountable)
A kind of infinite primal chaos in the cosmological theory of Anaximander.
In physics, his postulation that the indefinite (or apeiron ) was the source of all things led Greek philosophy to a new level of conceptual abstraction. Source: Internet
Pre-Socratic philosophers The ancient Greek term for the potential or improper infinite was apeiron (unlimited or indefinite), in contrast to the actual or proper infinite aphorismenon. Source: Internet
Clearly, the 'apeiron' was some sort of basic substance. Source: Internet
He postulated the apeiron as a substance that, although not directly perceptible to us, could explain the opposites he saw around him. Source: Internet
He proposed the theory of the apeiron in direct response to the earlier theory of his teacher, Thales, who had claimed that the primary substance was water. Source: Internet
Plato 's notion of the apeiron is more abstract, having to do with indefinite variability. Source: Internet