Look up: Xmas

1. 
   Xmas
   ``Xmas`` and ``X-mas`` are common abbreviations of the word `Christmas`. They are sometimes pronounced `eksmas`, but they, and variants such as `Xtemass`, originated as handwriting abbreviations for the pronunciation `Christmas`. The `-mas` part came from the Latin-derived Old English word for `mass`. This abbreviation is widely used but not universally accepted. Many do not know about its antiquity and believe it to be of commercial origin and...
   Found on http://en.wikipedia.org/wiki/Xmas
   
   
2. 
   Xmas
   Xmas (Greek) An abbreviation of Christmas. This is one of the oldest informalities of the English language. In its Old English form, it occurs in the Anglo-Saxon Chronicle. The 'X' stands for the Greek letter chi, the initial in the name Xristos (Khristos equals Christ). In Latin manuscripts, Christus was often abbreviated by using the...
   Found on http://www.wordinfo.info/words/index/inf