Biography Wikipedia
from Wikipedia:
Xi may refer to:
Xi (letter), a Greek letterXI, Roman numeral 11Xi (alternate reality game), the world's first console-based alternate reality gameXi baryon, a range of baryons with one up or down quark and two heavier quarksXi, Japanese name for the video game Devil DiceXi, a Latin digraph used in British English to write the sound /kʃ/Xi, is an ancient form of Chinese energyXi, is the 14th chapter of Kappa Alpha Psi Fraternity, Inc. It is pronounced "zee".