XI
Xi is a term with several distinct meanings across languages and disciplines. In the Greek alphabet, Xi (uppercase Ξ, lowercase ξ) is the 14th letter and is used in various scientific and mathematical notations as a symbol or variable. In astronomy, Bayer designations use the letter Xi to label certain stars within a constellation, typically followed by the genus name.
In Chinese contexts, Xi is a romanization of several surnames and given names, most commonly associated with
A prominent contemporary bearer of the surname in public life is Xi Jinping, who has served as