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in·tro·italso In·tro·it (ĭn′trō′ĭt, -troit′, ĭn-trō′ĭt)
1. Ecclesiastical A hymn or psalm sung when the officiant enters at the opening of a service.
2. Roman Catholic Church The beginning of the Mass, usually consisting of an antiphon, a psalm verse, and the Gloria Patri.
(Ecclesiastical Terms) RC Church Church of England a short prayer said or sung as the celebrant is entering the sanctuary to celebrate Mass or Holy Communion
[C15: from Church Latin introitus introit, from Latin: entrance, from introīre to go in, from intro- + īre to go]
in•tro•it(ˈɪn troʊ ɪt, -trɔɪt)
1. a part of a psalm with antiphon recited by the celebrant at the beginning of the Roman Catholic mass.
2. (in the Anglican or Lutheran Church) a psalm or anthem sung as the celebrant of the Holy Communion enters the sanctuary.
3. a choral response sung at the beginning of a religious service.
[1475–85; < Medieval Latin introitus (misse or ad missam), Latin: entrance, beginning =intrō- intro- + -i-, variant s. of īre to go]