D defs.my
Entry 3 senses Webster, 1913

aeon

· IPA
01 n. A period of immeasurable duration. See Eon.
  1. 1.
    A period of immeasurable duration. See Eon. See: Eon
  2. 2.
    a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe.(Gnosticism)
  3. 3.
    the longest division of geological time; two or more eras.
Syn. eonSyn. -- eon