/ Dictionary / Index S Sanctus: Meaning and Definition of Find definitions for: Sanc•tus Pronunciation: (sangk'tus), [key] — n. (italics) Also calledthe hymn beginning “Holy, holy, holy, Lord God of hosts,” with which the Eucharistic preface culminates. a musical setting for this hymn. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sanctum sanctorum Sanctus bell Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language