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Nov 27, 2009
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i'sotop'ic spin'



Physics.
a quantum number that is related to the number of different values of electric charge that a given kind of baryon or meson may have. Symbol: I Also called isospin, i -spin.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

isotopic numberisotopy
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