Noun

• S: (n) eon, aeon (the longest division of geological time)
• part meronym
• has instance
• direct hypernym / inherited hypernym / sister term
• S: (n) geological time, geologic time (the time of the physical formation and development of the earth (especially prior to human history))
• direct hyponym / full hyponym
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• S: (n) eon, aeon (an immeasurably long period of time) "oh, that happened eons ago"
• S: (n) eon, aeon ((Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe)