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Word of the Day Wednesday, June 10, 2026

fermi

/fɜːrmi/ noun · British & US
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What does fermi mean?

noun

A unit of energy, equal to 10^-13 joules, named after Enrico Fermi. It is often used to estimate the order of magnitude of a quantity.

Example

"The physicist estimated that the energy released by the reaction was on the order of a few fermis."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for fermi

Antonyms of fermi

Rhymes with fermi

Etymologically related