Trisagion

From New Latin [Term?], from Ancient Greek thrice + holy.

Trisagion (plural Trisagions)

1. A standard hymn of the Divine Liturgy in most of the Byzantine churches.
   • 1716, Thomas Browne, Christian Morals, 2nd edition edited by Samuel Johnson, London: J. Payne, 1756, Part I, p. 24,

     With these sure graces, while busy tongues are crying out for a drop of cold water, mutes may be in happiness, and sing the Trisagion in heaven.

• Tersanctus

• rigatonis