See also: Xi (homonymy)
Xi or Ksi (capital Ξ , tiny ξ ), in Greek
ξῖ
, letter of the Greek alphabet is the fourteenth. In Greek Numeration, xi is worth 60. The letter decides /ks/ (as in taxi or excel ), never /gz/ (as in exact xylophone or ).
The capital letter Ξ is used to represent: