/ Dictionary / Index F Fermi-Dirac statistics: Meaning and Definition of Find definitions for: Fer'mi-Di•rac' statis"tics Pronunciation: (fûr'mē-du-rak'), [key] — Physics. Physics. quantum statistics defining the possible arrangements of particles in a given system in terms of the exclusion principle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fermi fermion Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language