/ Dictionary / Index F Feynman diagram: Meaning and Definition of Find definitions for: Feyn'man di"agram Pronunciation: [key] — Physics. Physics. a network of lines that represents a series of emissions and absorptions of elementary particles by other elementary particles, from which the probability of the series can be calculated. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Feynman fez Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language