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truth quark

noun, Physics.
1.

top quark

noun, Physics.
1.
a heavy quark having electric charge 2/3 times the elementary charge.
Also called t quark, truth quark.
Origin
1975-1980
1975-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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truth-quark in Science
top quark
  (tŏp)   
A quark with a charge of +2/3. Its mass is larger than that of all the other quarks and is about 360,000 times that of the electron. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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