XMAS


Meaning of XMAS in English

/ ˈkrɪsməs; NAmE ; ˈeksməs/ noun

[ C , U ] ( informal ) used as a short form of 'Christmas', usually in writing :

A merry Xmas to all our readers!

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WORD ORIGIN

X representing the initial chi of Greek Khristos Christ.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.