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down quark
noun Physics.
the quark having electric charge −1/3 times the elementary charge, with strangeness, charm, and other quark quantum numbers equal to 0.
Also called d quark.
Origin:
1975–80
1975–80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Down quark
is always a great word to know.
So is fluidity. Does it mean:
| the ability of a substance to flow; a measure of this ability, the reciprocal of the coefficient of viscosity |
| a positively charged nucleus neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus |
American Heritage
Science Dictionary
down quark  (doun) Pronunciation Key
A quark with a charge of -1/3. Its mass is greater than that of the electron and the up quark, but smaller than that of all the other quarks. See Table at subatomic particle. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Word Dynamo Rating For Down quark
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
