Crossword puzzle clue "many a millennia"

Here are the possible solutions for many a millennia clue

Answer
Clue
Relevancy
aeon
Clue
Millennia upon millennia
Many, many millennia
Many millennia
Many a millennia
Many millennia (Var.)
Definition
the largest division of geological time, composed of several eras, also EON
eon
Clue
Millennia upon millennia
Many, many millennia
Definition
a long period of time, also AEON
eons
Clue
Many, many millennia
Definition
EON, a long period of time, also AEON

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