Contrary to popular belief, “Xmas” is not a trendy attempt to “take Christ out of Christmas”. “Christianity” was spelled “Xianity” as far back as 1100. X, or Chi, is the Greek first letter of “Christ” so “X” and back in the fourth century, Constantine the Great often referenced the shorthand version. Some say it was as early as 1021 that the abbreviation “XPmas” was used to reference the holiday, which was later shortened to “Xmas.”