d s particle

D-s meson

noun Physics.
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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a chattering or flighty, light-headed person.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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