fermi

noun
fer·​mi | \ ˈfer-(ˌ)mē How to pronounce fermi (audio) , ˈfər- How to pronounce fermi (audio) \

Definition of fermi

: a former SI unit of length equal to 10−15 meters : femtometer

First Known Use of fermi

1955, in the meaning defined above

History and Etymology for fermi

Enrico Fermi

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Cite this Entry

“Fermi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fermi. Accessed 5 Oct. 2022.

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Fermi biographical name

Fer·​mi | \ ˈfer-(ˌ)mē How to pronounce Fermi (audio) \

Definition of Fermi

Enrico 1901–1954 American (Italian-born) physicist

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