Bible Dictionaries
Trisagion

Webster's Dictionary

(n.) An ancient anthem, - usually known by its Latin name tersanctus.See Tersanctus.

Bibliography Information
Webster, Noah. Entry for 'Trisagion'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/trisagion.html. 1828.