| NOUN | cognition | QCD, quantum chromodynamics | a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus) |
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| Meaning | 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. | |
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| Synonym | quantum chromodynamics | |
| Broader | quantum field theory | The branch of quantum physics that is concerned with the theory of fields |
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