Answer:

AEON

AnswerCrossword Clue
AEONA long, long time
AEONAge
AEONEternity
AEONMany a millennium
AEONA billion years
AEONA very long time
AEONAn indefinitely long period of time
AEONIndefinite period
AEONAges and ages
AEON"... Flux" (Peter Chung animated series)
AEONA very, very long time
AEONMany millennia (variant spelling)
AEONImmeasurable time
AEONLong, long time
AEONOne billion years
AEONA million millennia
AEONMany millennia
AEONVideo game ".. Flux"
AEONInterminable time
AEONFlux played by Charlize
AEONQuite some time
AEONSeemingly forever?
AEONSemi-eternity?
AEON"... Flux" (1990s animated series)
AEON"... Flux" (1990s MTV series)
AEONReally long time
AEONVery long time
AEONTwo or more eras
AEONLong time
AEONQuite a long stretch
AEONNear-eternity
AEONQuite a long time
AEONMillion-millennia period
AEONGeological time division
AEON10 million centuries
AEONAges upon ages
AEONCenturies on end
AEONMany ages
AEONBillion years
AEONImmeasurably long time