aeon

noun

1. (in Gnosticism) one of a class of powers or beings conceived as emanating from the Supreme Being and performing various functions in the operations of the universe.
2. eon.

noun

1. an indefinitely long period of time; age.
2. the largest division of geologic time, comprising two or more eras.
3. Astronomy. one billion years.

noun

1. an immeasurably long period of time; age
2. a period of one thousand million years
3. (often capital) gnosticism one of the powers emanating from the supreme being and culminating in the demiurge

noun

1. the usual US spelling of aeon
2. geology the longest division of geological time, comprising two or more eras

n.

1640s; see eon.

n.

1640s, from Latin aeon, from Greek aion “age, vital force, a period of existence, lifetime, generation;” in plural, “eternity,” from PIE root *aiw- “vital force, life, long life, eternity” (cf. Sanskrit ayu “life,” Avestan ayu “age,” Latin aevum “space of time, eternity,” Gothic aiws “age, eternity,” Old Norse ævi “lifetime,” German ewig “everlasting,” Old English a “ever, always”).

1. The longest division of geologic time, containing two or more eras.