PERIOD OF A BILLION YEARS Crossword Clue

The most common solution for the crossword clue "PERIOD OF A BILLION YEARS" are EON with 3 letters.
We know 1 solutions for: PERIOD OF A BILLION YEARS
Crossword Puzzle Infos
The term 'Period of a Billion Years' can be abbreviated as EON, which is a three letter word. An EON is the longest unit of geological time and is divided into eras. It is estimated that the Earth has been around for 4.5 billion years, so one EON would be a period of a billion years.
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