/mis"euhl/ , n.
1. ( sometimes cap. ) Rom. Cath. Ch. the book containing the prayers and rites used by the priest in celebrating Mass over the course of the entire year.
2. any book of prayers or devotions.
[ 1300-50; ME missale, n. use of neut. of missalis, equiv. to miss ( a ) MASS + -alis -AL 1 ]