Crossword puzzle clue "a billion years geologically"

Here are the possible solutions for a billion years geologically clue

Answer
Clue
Relevancy
eon
Clue
One billion years, geologically
365 billion days, geologically
Years and years and years
Definition
a long period of time, also AEON
eons
Clue
One billion years, geologically
A billion years, geologically
Billions of years, geologically
Years and years and years
Definition
EON, a long period of time, also AEON
ages
Clue
Years and years and years
Definition
AGE, to grow old

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