What is the answer to "Billion-year period"?

The most common answer is EON. However, there is 1 possible answer to this clue.

When was this clue last used?

This clue was most recently seen in 2025, and first appeared in 2023.

How difficult is this clue?

We rate this clue as Easy difficulty.

Billion-year period Crossword Clue Answer

Looking for Billion-year period? This 3-letter clue recently appeared in the Daily Themed October 9, 2025 puzzle. Find the answer below to complete your crossword.

Billion-year period Crossword Answer

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2 ?

3 ?

Hints

Hint 1 meaning

Hint 2 clue words

Hint 3 anagram

Other Daily Themed Clues (10/9/25)

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Billion-year period Crossword Clue FAQ

What is the 3-letter answer to "Billion-year period" crossword clue?

The answer to the "Billion-year period" crossword clue is EON. This answer contains 3 letters and was confirmed in the Daily Themed puzzle.

Which crossword used "Billion-year period" clue?

This crossword clue most recently appeared in the Daily Themed puzzle on October 9, 2025. Daily crossword puzzles often reuse popular clues, so this clue may appear again in future puzzles from the same publication or others.

What is the meaning of EON?

The word EON means: the longest division of geological time. This definition provides context for why it fits the crossword clue "Billion-year period".