Billion-year period Crossword Clue

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Here is the answer for the crossword clue Billion-year period last seen in USA Today puzzle. We have found 40 possible answers for this clue in our database. Among them, one solution stands out with a 98% match which has a length of 3 letters. We think the likely answer to this clue is EON.

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Crossword Answer For Billion-year period:

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40 Potential Answers:

RankAnswerLengthSourceDate
98% EON Billion-year period (3) USA Today Dec 1, 2025
98% AEON Billion-year period (4)
45% EONS Billion-year periods (4)
45% AEONS Billion year periods (5)
4% AGO "The big bang happened billions of years ___" (3)
4% SEASONS Periods of the year (7) (7) Puzzler Dec 22, 2025
4% DECADE Ten-year period (6) USA Today Nov 11, 2025
3% NIGHT Nocturnal period (5) The Times Concise Jan 12, 2026
3% ROW Period in the periodic table (3) New York Times Jan 11, 2026
3% CAREER Period of work (6) TV Jan 11, 2026

Last appeared together with the following clues in USA Today puzzle

Billion-year period Crossword Clue
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We found 40 solutions for Billion-year period. The top solutions are determined by popularity, ratings and frequency of searches. The most likely answer for the clue is EON.

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