Feynman diagram /ˈfaɪnmən ˈdaɪəɡɹæm/ noun1 •A pictorial representation of the interactions of subatomic particles, showing their paths in space and time as lines, and their interactions as points where lines meet.Feynman diagrams for the fourth-order radiative corrections to the scattering of an electron by an electromagnetic field. — 1950 formsFeynman diagrams
