Christmas is only an abbreviation of Christmas. It means exactly the same as Christmas and has no other meaning.
Please see the Related Question, below, for more information.
No. Xmas is an abbreviation of Christmas - but there are not other English words for it.
Christmas. It has other names, such as Xmas (an abbreviation), Yule, Yuletide and Noel, which comes from the french word for Christmas, Noël.
QOD is the abbreviation for every other day.
The only listed medical meaning for the abbreviation of BCC is basal cell carcinoma. The other listed meaning for this abbreviation is blind carbon copy.
T&A (yep, it's the other "T&A")
The abbreviation for real estate is RE. Of course, it would have to be used in an appropriate context to have that meaning since RE can be used in other contexts.
MS is a common one but, of course, "MS" may have many other meanings, so it's best not to use that abbreviation if the meaning isn't completely clear from the context of the medical note.
No. Christmas is a proper noun. Its use with other nouns (Christmas dinner, Christmas present, Christmas tree) is as a noun adjunct, not an adjective. The adjective meaning 'of or like Christmas' is Christmasy or Christmassy.
The abbreviation for real estate is RE. Of course, it would have to be used in an appropriate context to have that meaning since RE can be used in other contexts.
Only about 23% of people in the UK celebrate the birth of Jesus. People forget the real meaning of Christmas because people now think that the real meaning of Christmas is giving presents to each other. The real meaning of Christmas is to thank God for bringing himself to earth as a human being. He came to earth to forgive the people their sins and to give them a fresh start. It is also to share joy and love to each other and with family, friends and relations. Now that people forget this less and less people that really understand why Christmas is celebrated on earth.
It is the abbreviation of the name Muhammad. It meaningless in Arabic other than the fact that it's used for shortness.
CP is an abbreviation for "Celebral Palsy" and is used derogatorily about other people meaning "idiot" or "retard"