QCD

(kū´sē`dē´)

n.

1.

(Physics) Quantum chromodynamics.

Thesaurus

Noun

1.

QCD - a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus); it assumes that strongly interacting particles (hadrons) are made of quarks and that gluons bind the quarks together quantum chromodynamics quantum field theory - the branch of quantum physics that is concerned with the theory of fields; it was motivated by the question of how an atom radiates light as its electrons jump from excited states