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quantum chromodynamics
quantum chromodynamics
noun 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. Abbreviation: QCD Also called chromodynamics. Compare color (def. 18).
Origin:
1975–80
1975–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Quantum chromodynamics
is always a great word to know.
So is acceleration of gravity. Does it mean:
| the attractive effect of matter on other matter; the region surrounding an astronomical body in which the force of gravitation is strong |
| the acceleration of a falling body in the earth's gravitational field, inversely proportional to the square of the distance from the body to the center of the earth |
Collins
World English Dictionary
| quantum chromodynamics | |
| —n | |
| physics QCD a theory describing the strong interaction in terms of quarks and gluons, with the colour of quarks used as an analogue of charge and the gluon as an analogue of the photon | |
| [C20: chromodynamics from | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
| quantum chromodynamics
A quantum field theory of the strong force that explains the interaction between particles with color charge, such as quarks and gluons. In quantum chromodynamics, particles interact through the strong force by exchanging gluons, which are the carriers of the strong force (much as photons are the carriers of the electromagnetic force in quantum electrodynamics). The theory is particularly important in theories of the atomic nucleus, whose nucleons are composed of quarks. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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