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D-s meson

noun, Physics.
1.
a positively charged meson having a mass 3852 times that of the electron and a mean lifetime of approximately 4.7 X 10 -13 seconds.
Also called D-s particle.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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d-s particle in Science
D-s particle
  (dē'ěs')   
A positively charged meson having a mass 3,852 times that of the electron and a mean lifetime of approximately 4.7 × 10-13 seconds. See Table at subatomic particle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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