Pronounced as KEY-ROW  the first two letters of the Greek word XPISTOS (Christ) The Chi (X) and the Rho (P) become the monogram made of these two letters.  It is used in many ways to express the name of Jesus Christ.  This symbol is widely used today.  Often the X and P are encircled (such as within a globe) which then too symbolizes the vocation to bring the knowledge and love of Christ to the whole world.