• Webster's Revised Unabridged Dictionary
    • n Trisagion (Eccl) An ancient anthem, -- usually known by its Latin name tersanctus.See Tersanctus.
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Chambers's Twentieth Century Dictionary
    • n Trisagion tri-sā′gi-on a hymn used in the early and Oriental Churches, and in the Greek Church, consisting of the words 'O Holy God, holy and mighty, holy and immortal, have mercy on us.' The name is often applied erroneously to the Tersanctus.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. thrice holy; thrice + holy
Chambers's Twentieth Century Dictionary
Gr. tris, thrice, hagios, holy.


In literature:

They had sung their addition to the Trisagion on a Sunday in the Church of St. Michael within the palace.
"The Formation of Christendom, Volume VI" by Thomas W. (Thomas William) Allies
The name is often applied to the Trisagion (tersanctus), or "Holy, Holy, Holy," the scriptural basis of which is found in Isaiah vi.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6" by Various
The Trisagion rings, and has need to ring, for ever down the Church.
"The Book of Isaiah, Volume I (of 2)" by George Adam Smith
"Curiosities of Christian History" by Croake James

In poetry:

Why thus, apart,--the swift-winged herald spake,--
Sit ye with silent lips and unstrung lyres
While the trisagion's blending chords awake
In shouts of joy from all the heavenly choirs?
"Homesick In Heaven" by Oliver Wendell Holmes