MISSA definition

Etymology

From the phrase "Ite, missa est,", "Go, it is the dismissal (or sending)", reinterpreted as naming the ceremony: "Go, it is the Mass" or "Go, the Mass is over"; from perfect passive participle missus, dismissal or sending, from verb mittere, send

Noun

missa

(in music) a mass, in the sense of a composition setting several sung parts of the liturgic service (most often chosen from the ordinary parts Kyrie, Gloria, Credo, Agnus Dei and/or Sanctus) to music, notably when the text in Latin is used (as long universally prescribed by Rome)

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