Xi
- Proper noun. (surname, common) of east Asian derivation.
- Noun. The name for the 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.
- Noun. (particles) Either of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.
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This entry was last updated on RefTopia from its source on 3/20/2012.