Noun
An ancient and celebrated Christian hymn, of uncertain authorship, but often ascribed to St. Ambrose; -- so called from the first words "Te Deum laudamus." It forms part of the daily matins of the Roman Catholic breviary, and is sung on all occasions of thanksgiving. In its English form, commencing with words, "We praise thee, O God," it forms a part of the regular morning service of the Church of England and the Protestant Episcopal Church in America.
A religious service in which the singing of the hymn forms a principal part.
Source: Webster's dictionaryThe triumphal-procession-air which, in our manners and customs, is given to marriage at the outset - that singing of Te Deum before the battle has begun. Jane Welsh Carlyle
After the hymn " Te Deum ", Laurentius Andreae proclaimed Gustav Eriksson king of Sweden. Source: Internet
Huguenot massacre medal After the St. Bartholomew's Day Massacres of Huguenots in France in 1572, Pope Gregory celebrated a Te Deum mass. Source: Internet
His Te Deum celebrates the Russian victory at Ochakov (1789) with the firing of a real cannon and the use of fireworks, to heighten the martial effect of the music. Source: Internet
He also wrote a Te Deum and Benedictus for the Hereford Festival. Source: Internet
Of the set canticles, only the Te Deum was retained of the non-biblical material. Source: Internet