Feynman diagram

noun 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 Feynman graph.

Origin:
1965–70; named after R. P. Feynman, who devised it

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World English Dictionary

Feynman diagram (ˈfaɪnmən)

—n
	physics a graphical representation of the interactions between elementary particles

Collins English Dictionary - Complete & Unabridged 10th Edition
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Science Dictionary

Feynman diagram
A diagram used to help describe and visualize the possible interactions between particles in quantum electrodynamics and quantum chromodynamics. Fermions, such as electrons, are represented with straight lines and bosons, such as photons, with wavy lines. Points of intersection indicate an interaction, such as an electromagnetic interaction, between the particles.

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