/ Dictionary / Index F fermi: Meaning and Definition of Find definitions for: fer•mi Pronunciation: (fûr'mēIt.fer'mē), [key] a unit of length, 10− m, used in measuring nuclear distances. Symbol: F &hasp;Also called Fer•mi Pronunciation: (fûr'mēIt.fer'mē), [key] 1901–54, Italian physicist, in the U.S. after 1939: Nobel prize 1938. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fermi (Thesaurus) fermentative Fermi-Dirac statistics Related Content Daily Word Quiz: morose Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language