The Mass or Eucharist is the central act of divine worship in the Catholic Church, which describes it as "the source and summit of the Christian life". In formal contexts, it is sometimes called the Holy Sacrifice of the Mass.
Many of the Catholic Church's other sacraments are celebrated in the framework of the Eucharist.
The term "Mass" is derived from the Late Latin word missa (dismissal), a word used in the concluding formula of Mass in Latin: "Ite, missa est" ("Go; it is the dismissal"). In antiquity, missa simply meant 'dismissal'. In Christian usage, however, it gradually took on a deeper meaning. The word 'dismissal' has come to imply a 'mission'. These few words succinctly express the missionary nature of the Church.