Sanctus

1. a. A hymn of praise sung at the end of the Preface in many Eucharistic liturgies.
   b. A hymn of praise that is the last item of the Preface of the Ordinary of the Roman Catholic Mass.
2. A musical setting for either of these hymns of praise.

Origin:

Origin: Middle English

Origin: , from Late Latin Sānctus

Origin: , from Latin sānctus, holy (from the first word of the hymn); see sanctify