ChristmasorChristmasDayisaholidaycelebratingthebirthofJesus,thecentralfigureofChristianity.ItistraditionallycelebratedonDecember25bymostWesternChristianchurches.Althoughdatingtoprobablyasearlyasa.d.200,thefeastofChristmasdidnotbecomewidespreaduntiltheMiddleAges.Aspectsofcelebrationmayincludegift-giving,Christmastrees,displayofNativitysets,churchattendance,theFatherChristmas/SantaClausmyth,andfamilygatherings.ThewordChristmasisderivedfromMiddleEnglishChristemasse.Itisacontractionmeaning"Christ'smass".ThenameoftheholidayisoftenshortenedtoXmasbecauseRomanletter"X"resemblestheGreekletterX,anabbreviationforChrist.圣诞节或圣诞节是庆祝耶稣诞生的节日,基督教的核心人物。它是由大多数西方传统上在12月25日庆祝基督教堂。虽然约会可能早在公元200年,圣诞节的盛宴才普及中世纪。方面的庆祝活动可能包括赠送礼物、圣诞树、圣诞集显示教堂,圣诞老人和圣诞老人的神话,和家庭聚会。圣诞节是来自中世纪英语Christemasse这个词。这是一个收缩“基督弥撒”的意义。节日的名称通常是缩短了圣诞节,因为罗马字母“X”类似于希腊字母X,基督的缩写。