quantum chromodynamics
noun plural but singular in construction Date: 1975 a theory of fundamental particles based on the assumption that quarks are distinguished by differences in color and are held together (as in hadrons) by an exchange of gluons

New Collegiate Dictionary. 2001.

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  • quantum chromodynamics — n. [with sing. v.] a theory that describes the forces and interactions of quarks and gluons in hadrons: see also COLOR (n. 19), CHROMODYNAMICS …   English World dictionary

  • Quantum chromodynamics — Standard model of particle physics Standard Model …   Wikipedia

  • quantum chromodynamics — Physics. a quantum field theory that describes quarks and gluons and their interactions, with the color of the quarks playing a role analogous to that of electric charge. Abbr.: QCD Also called chromodynamics. Cf. color (def. 18). [1975 80] * * * …   Universalium

  • quantum chromodynamics — plural noun [treated as sing.] Physics a theory in which the strong interaction is described in terms of an interaction between quarks transmitted by gluons. Origin chromodynamics from chromo 2 colour (property of quarks) + dynamics …   English new terms dictionary

  • quantum chromodynamics — noun A quantum field theory in particle physics which describes the strong interaction of quarks and gluons employing the concept of color charge …   Wiktionary

  • quantum chromodynamics — n. theory that describes the interactions between quarks and between protons and neutrons in the framework of quantum theory …   English contemporary dictionary

  • quantum chromodynamics — quan′tum chro•mo•dy•nam′ics [[t]ˌkroʊ moʊ daɪˈnæm ɪks[/t]] n. phs (used with a sing. v.) a quantum theory of the interactions of quarks and gluons in which the color of quarks is analogous to electric charge Abbr.: QCD …   From formal English to slang

  • quantum chromodynamics — noun 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… …   Useful english dictionary

  • quantum chromodynamics — /kwɒntəm kroʊmoʊdaɪˈnæmɪks/ (say kwontuhm krohmohduy namiks) noun Physics the theory that a proton consists of two up quarks and one down quark, giving a total charge of +1 e, while a neutron consists of two down quarks and one up quark and has a …   Australian English dictionary

  • quantum chromodynamics — (QCD) The theory of strong interactions between elementary particles including the interaction that binds protons and neutrons to form a nucleus. It assumes that strongly interacting particles are made of quarks and that gluons bind the quarks… …   Dictionary of automotive terms

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