noun in·troit \ˈin-ˌtrȯit, -ˌtrō-ət, in-ˈtrȯit, -ˈtrō-ət\

Definition of introit

  1. 1 often capitalized :  the first part of the traditional proper of the Mass consisting of an antiphon, verse from a psalm, and the Gloria Patri

  2. 2 :  a piece of music sung or played at the beginning of a worship service

Origin and Etymology of introit

Middle English, from Medieval Latin introitus, from Latin, entrance, from introire to go in, from intro- + ire to go — more at issue

First Known Use: 15th century

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