Definitions from Wiktionary (Xi)

▸ noun:  The 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.
▸ noun:  (physics) Either of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.
▸ noun:  (soccer) A football (soccer) team of eleven players.
▸ noun:  (cricket) A cricket team of eleven players.
▸ noun:  A river in China, the western tributary of the Pearl.
▸ noun:  A surname from Chinese
▸ noun:  Xi Jinping, current General Secretary of the Chinese Communist Party (2012–present).
▸ noun:  A county of Linfen, Shanxi, China.
▸ noun:  Capital Greek letter Ξ (X)
▸ noun:  Alternative form of xi, Greek letter Ξ/ξ (X/x) [The 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.]
▸ noun:  (physics) Alternative form of xi/Ξ Ellipsis of xi baryon.

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