By. Maria Odete Madeira
Aion is the Greek term for that which is without end in the Time, aidios (Aristotle, Meta., 1072b). Outside the Greek philosophical contexts, the term Aion, incorporated in the common daily language, meant period of life.
Melissus made an approximation of the term Aion to the term Apeiron (without limit), primordial substance in Anaximander. In a later development, Plotinus (Enn., III,7,4) attributed to Aion the meaning of mode of existence of the Being.
That which is without end in the Time (Khronos) was systemically expanded and synthesized in a notion of Time Aion.