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beauty quark

noun, Physics.

bottom quark

noun, Physics.
1.
the quark having electric charge −1/3 times the elementary charge and bottom quantum number −1. It is more massive than the up, down, strange, and charmed quarks.
Also called beauty quark, b quark, b-quark.
Origin
1975-1980
1975-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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beauty-quark in Science
beauty quark
  (by'tē)   
See bottom quark.
bottom quark
  (bŏt'əm)   
A quark with a charge of - 1/3 . Its mass is smaller than that of the top quark, but larger than that of all the other quarks. The bottom quark is sometimes referred to as the beauty quark, though this term is falling out of use. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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