from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The flavor of quark that has a charge of − 1/3 , a mass about 190 times that of an electron, a strangeness of −1, and that belongs to the second generation of elementary fermions.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A quark having a
fractional electric chargeof -1/3 and a massabout 80 to 130 MeV. Symbol: s
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a quark with an electric charge of -1/3 and a mass 988 times that of an electron and a strangeness of -1
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