Clearing up a common misconception, in Greek, X means Christ. That is where the word “X-Mas” comes from. Not because someone took the “Christ” out of Christmas. “Xmas” is a common abbreviation of the word “Christmas”. It is sometimes pronounced /ˈɛksməs/, but it, and variants such as “Xtemass”, originated as handwriting abbreviations for the typical pronunciation /ˈkrɪsməs/. The “-mas” part is from the Latin-derived Old English word for “Mass”, while the “X” comes from the Greek letterChi, which is the first letter of the Greek word Χριστός, translated as “Christ”.
Abbreviations used as Christian symbols have a long history in the church. The letters of the word “Christ” in Greek, the language in which the New Testament was written, or various titles for Jesus early became symbols of Christ and Christianity. For example, the first two letters of the word Christ (cristoV, or as it would be written in older manuscripts, CRISTOS) are the Greek letters chi (c or C) and rho (r or R). These letters were used in the early church to create the chi-rho monogram a symbol that by the fourth century became part of the official battle standard of the emperor Constantine.
Another example is the symbol of the fish, one of the earliest symbols of Christians that has been found scratched on the walls of the catacombs of Rome. It likely originated from using the first letter of several titles of Jesus (Jesus Christ Son of God Savior). When combined these initial letters together spelled the Greek word for fish (icquV, ichthus).
The exact origin of the single letter X for Christ cannot be determined. Some claim that it began in the first century AD along with the other symbols. Others think that it came into widespread use by the thirteenth century along with many other abbreviations and symbols for Christianity and various Christian ideas that were popular in the Middle Ages.
If you say, write, facebook, or tweet Merry X-Mas or Merry Christmas, just remember to Keep Christ in your Christmas and your daily life.

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