Crossword puzzle clue "extremely long period of time"

Here are the possible solutions for extremely long period of time clue

Answer
Clue
Relevancy
eon
Clue
Long long long long long long long time
Long, long, long time period
Extremely long time period
Extremely long period of time
Extremely long geologic time period
An extremely long period of time
Definition
a long period of time, also AEON
eons
Clue
Extremely long period of time
Definition
EON, a long period of time, also AEON
aeon
Clue
Long, long time period (var.)
Definition
the largest division of geological time, composed of several eras, also EON

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