Crossword puzzle clue "a billion years in astronomy var"

Here are the possible solutions for a billion years in astronomy var clue

Answer
Clue
Relevancy
aeon
Clue
A billion years, in astronomy (Var.)
A billion years (Var.)
Billion years (Var.)
Definition
the largest division of geological time, composed of several eras, also EON
eon
Clue
One billion years, in astronomy
A billion years, in astronomy
Billion years, in astronomy
1 billion years, in astronomy
365 billion days, in astronomy
Definition
a long period of time, also AEON

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