Introitus
In anatomy, an introitus is an entrance, one that goes into a canal or hollow organ. The introitus of the facial canal is the entrance to the facial canal, a passage in the temporal bone of the skull through which the facial nerve (the 7th cranial nerve) travels. The introitus of the vagina is the opening to the vagina: {{}}The Latin word "introitus" comes from "intro", into, within + "ire", to go = to go into.
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in·troi·tus in-'trō-ət-əs n,
pl introitus the orifice of a body cavity
esp the vaginal opening
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n.
(in anatomy) an entrance into a hollow organ or cavity.
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in·troi·tus (in-troґĭ-təs) pl. introґitus [L.] an entrance or opening.
Medical dictionary.
2011.