MEANING OF XMAS
Xmas (abbreviation for Christmas)
The Greek letter C, c (pronounced chi and looks like the Roman letter X) was a popular abbreviation of the name Christ for the early persecuted Christians, X or chi is the first letter of Christ when written in Greek and also resembled the cross.
Xmas appeared in use by early Christians. It would not be pronounced Ex-mass, but Christmas.
Also common was Xian, abbreviation for Christian.
Now most Christians (justified or not) unfamiliar with the Greek reference see it as being disrespectful and an attempt to X Christ out of Christmas, which sometimes now is just that.
(ichthys) means fish in Greek, originally used by early Christians and put inside a shape of a fish, contains the 1st letters of the Greek words, which translates; - Jesus, - Christ, - of God, - Son, - Savior.
Many of the 1st and 2nd centuries Christians used the sign to secretly identify themselves to one another and identify safe places for Christians.