- A hymn of praise sung at the end of the Preface in many Eucharistic liturgies.
- A hymn of praise that is the last item of the Preface of the Ordinary of the Roman Catholic Mass.
- A musical setting for either of these hymns of praise.
[Middle English, from Late Latin Sānctus, from Latin sānctus, holy (from the first word of the hymn). See sanctify.]






