Meatus
In anatomy, a
meatus /miːˈeɪtəs/ is a natural body opening or canal. Examples include: ▪ the external acoustic meatus, the opening of the ear canal ▪ The internal auditory meatus, a canal in the temporal bone of the skull ▪ the urinary meatus, which is the opening of the urethra, situated on the glans penis in males, and in the vulva in females ▪ the superior meatus, middle meatus and inferior meatus of the nose (The plural forms of "meatus" are:
meatus, as a Latin form (of the fourth declension noun class, which the word belongs to); or
meatuses, as a normally derived English plural; or often, and incorrectly,
meati, by false analogy with the very common Latin
-us/-i forms (such as
alumnus/alumni), i.e., the second declension noun class.)...