Evan Graber

An abbreviation of Christ using the Greek letters Xi and po (p makes an r sound in Greek, so pronounced "Key" and "Row"), which are the first two letters in the word Christ in Greek. This is a traditional sign of Christ. It can be used here to denote anything relating to Jesus Christ, Christology, or Christianity(see #Xn).

An abbreviation of the word Christian, using the Greek letters Xi and Nu. This can be used to denote any content relating to Christianity, Christians, or the Christian religion.