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xi particle
noun
, Physics.
- any of a family of baryons having strangeness −2 and isotopic spin ½. : Ξ
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Word History and Origins
Origin of xi particle1
First recorded in 1960–65
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Example Sentences
It should have a life span of one ten-billionth of a second after it is formed, and then decay into a xi particle and a pi-meson.
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