introitus

1. (medicine) The entrance to a hollow organ or canal; often specifically the entrance to the vagina.Examples: "During NA therapy, 49 of the 54 women cleared their introitus of all Enterobacteriaceae."; "Now, far be it from me to add insult to injury, but how could you be so klutzy that you "missed the introitus"?"; "There is nothing feminine about these male pseudohermaphrodites except their introitus, and they seem to be normally male otherwise."Synonyms: introitus vaginæ

2. (music) A piece of music played before a mass; a musical introduction of any sort.Examples: "Five have an introitus (introduction) that stands outside the isorhythmic scheme;¹⁰⁸ some of these introitus are instrumental rather than vocal […]"; "As summarized in Example 3.14, nearly all of these introitus […]"