IPA: /ˈɪntrɔɪt/
KK: /ˈɪntrɔɪt/
A song or piece of music performed at the start of a religious service, often when the ministers enter.
The choir sang a beautiful introit as the service began.
Introit is formed from "intro-" (meaning into) and "it" (from Latin "ire", meaning to go). The word refers to the part of a liturgical service that is sung or recited as the clergy enter, symbolizing the entrance into worship.
Think of 'going into' ('intro-') a place, which helps you remember that an introit is the entrance part of a service.