Meatus
Template:Sister project In anatomy, a meatus (Template:IPAc-en, Template:Respell,<ref>OED 2nd edition, 1989, as {{#invoke:IPA|main}}.</ref> Template:Plural form: meatus or meatuses)<ref>Entry "meatus" in Merriam-Webster Online Dictionary.</ref> is a natural body opening or canal.
Meatus may refer to:
- 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 vulval vestibule in females
- one of three nasal meatuses: the superior meatus, middle meatus and inferior meatus; each are passages through the nasal cavity within the skull
(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.)