fermi

noun

fer·​mi ˈfer-(ˌ)mē How to pronounce fermi (audio) ˈfər- How to pronounce fermi (audio)
: a former SI unit of length equal to 10−15 meters : femtometer

Word History

Etymology

Enrico Fermi

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of fermi was in 1955

Dictionary Entries Near fermi

fermeture

fermi

Fermi

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Cite this Entry

“Fermi.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fermi. Accessed 26 Dec. 2024.

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Biographical Definition

Fermi

biographical name

Fer·​mi ˈfer-(ˌ)mē How to pronounce Fermi (audio)
Enrico 1901–1954 American (Italian-born) physicist
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