Feynman diagram: Meaning and Definition of

Feyn'man di"agram

Pronunciation: [key]
— Physics. Physics.
  1. 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.