What is a xiRo?
In religious (and, more particularly, Christian) terms, a
"Chi-Rho" is a symbol of spiritual significance because it
represents Christ -- the redeemer-savior at the center of Christian
faith. In the Greek language, the "chi" is the first letter for
"Christ" (or, "xpristos" in a rough transliteration) while the
"rho" is the second. The "Chi-Rho" symbol is created by placing
these letters atop each other.