meatus


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me·a·tus

 (mē-ā′təs)
n. pl. me·a·tus·es or meatus
A body opening or passage, such as the opening of the ear or the urethral canal.

[Latin meātus, passage, from past participle of meāre, to pass; see mei- in Indo-European roots.]

me·a′tal (-təl) adj.

meatus

(mɪˈeɪtəs)
n, pl -tuses or -tus
(Anatomy) anatomy a natural opening or channel, such as the canal leading from the outer ear to the eardrum
[C17: from Latin: passage, from meāre to pass]

me•a•tus

(miˈeɪ təs)

n., pl. -tus•es, -tus.
an opening, esp. in a bone or bony structure, as the ear or nose.
[1655–65; < Latin meātus course, channel]
me•a′tal, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.meatus - a natural body passagewaymeatus - a natural body passageway    
passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages"
acoustic meatus, auditory canal, auditory meatus, ear canal, external auditory canal - either of the passages in the outer ear from the auricle to the tympanic membrane
nasal meatus - the passages in the nasal cavity formed by the projections of the nasal conchae
Translations

me·a·tus

n. meato, pasaje, abertura, apertura.

meatus

n (pl meatus) meato
References in periodicals archive ?
An abnormal ventral opening of urethral meatus from ventral aspect of glans penis to the perineum.
Nasal endoscopy showed a large structure in the left middle meatus between the middle turbinate and lateral wall of the nose (figure, B) The patient was taken for endoscopic sinus surgery for ventilation and drainage.
Urethral caruncles usually arise from the posterior lip of the urethral meatus.
Several studies in adults have shown a good correlation between cultures of the middle meatus and the sinus aspirates in patients with acute sinusitis, especially when purulence is seen in the middle meatus.
Nasal endoscopy identified polypoid tissue in the left middle meatus that had arisen from somewhere behind the left uncinate process (figure, B).
They are midline-developmental cysts that can be found anywhere from the anus to the urinary meatus.
Deviated nasal septum alone (20%) or in combination with other findings and pus in middle meatus (12%) were the most common findings on DNE.
The indications for treatment in this case were the patient's sensation of a mass effect, the encroachment of the mass onto the external auditory meatus, and a cosmetic deformity.
This factor explains many failures of traditional sinus surgeries for treatment of maxillary sinusitis when a nasal antral window is created in the inferior meatus or a Caldwell Luc's approach is used, while disease in anterior ethmoid sinus (which causes an obstructed natural ostium) is not taken care of.
Superior semicircular canal dehiscence and an abnormally wide internal auditory meatus are clinical entities characterized by vestibular and cochlear symptoms.
Previously, the treatment of maxillary sinus mucoceles was based on Caldwell-Luc sinusectomy, with the creation of a nasoantral window through the inferior meatus and a complete removal of the maxillary sinus lining to avoid recurrence.
The main goals of open cavity mastoidectomy are to completely eradicate the disease, create a large enough meatus for examination and mastoid air cells, and provide a self-cleaning epithelized dry cavity, and achieve maximum hearing.