Fermis
6 lettersnounrareUpdated June 2026
Definition
Plural of fermi, a unit of length used in nuclear physics equal to one femtometre (10 to the power of minus 15 metres).
“The radius of a proton is typically quoted in fermis.”
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Wordle
All common letters F, E, R, M, I, S, no tricky doubles or unusual patterns
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Worth 11 points, the M contributes well, a valid scientific plural that may catch opponents off guard
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