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Fermat’s principle
fermata
ferment
fermentation
fermentation lock
fermenter
fermi
Fermi-Dirac statistics
fermion
fermium
fern
fern bar
fern seed
Fernando de Noronha
Fernando Póo
fernbird
fernery
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fermion

fer·mi·on [ fúrmee òn, férmee òn ] (plural fer·mi·ons)


noun 
Definition:
 
elementary particle: an elementary particle with a half-integral spin that obeys the Pauli exclusion principle. Electrons, protons, and neutrons are types of fermions.

[After Enrico Fermi]
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