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strange quark

noun, Physics.
a quark having electric charge −1/3 times the elementary charge and strangeness −1; it is more massive than the up and down quarks.
Also called s quark.
1970-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for strange quark
  • In the high-density environment inside a neutron star, however, scientists expect the strange quark to have an easier time of it.
  • strange quark-antiquark pairs are constantly bubbling up in the proton.
strange quark in Science
strange quark  
A quark with an electric charge of -1/3 and a mass of 391 electron masses, greater than that of the up quark and down quark, but smaller than that of other quarks. The presence of a strange quark contributes strangeness of -1 to the physical system containing it, while a strange antiquark contributes strangeness of +1. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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