- a large book containing the prayers, readings, and rubrics authorized by the Roman Catholic Church for the celebration of Mass
- any small book with such content abridged, for use by people attending Mass
Origin of missalMiddle English missale ; from Ecclesiastical Medieval Latin neuter of missalis, of Mass ; from Ecclesiastical Late Latin missa, Mass
- Roman Catholic Church A book containing all the prayers and responses necessary for celebrating the Mass throughout the year.
- A prayer book.
Origin of missalMiddle English messel, from Old French, from Medieval Latin missale, from neuter of missalis, of the Mass, from Late Latin missa, Mass; see Mass.