Ē'on, n.
n. [Gr. αἰών, space or period of time, lifetime, age, generation, eternity, Lat. ævum.] [Written also æon.]
Sense 1. A space or period of time, especially the time during which a person lives, or any thing exists; hence, also, the period during which the universe has duration; infinite space of time; eternity; also, an indefinite period of time, especially a very long one; an age, or one of a series of ages; a cycle; sometimes, the period assigned to an event; dispensation; era.
Sense 2. (Platonic Philos.) A virtue, attribute, or perfection, existing from eternity, and considered by the Gnostics as a certain substantial power or divine nature emanating from the Supreme Deity, and performing various functions in the creation and government of the universe.